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# Installing System Components

Dell™ PowerEdge™ R905 Hardware Owner's Manual

Recommended Tools Inside the System Removing and Replacing the Optional Front Bezel Opening and Closing the System Cooling Fans Cooling Shroud Assembly Power Supplies Processor Expansion Module Expansion Cards Riser Board RAC Card Internal USB Memory Key (Optional) TOE/iSCSI Key (Optional) SD Memory Card NIC Daughter Card System Memory | Processors Installing an Optical Drive Hard Drives SAS Controller Cards Connecting an External SAS Tape Drive Connecting an External Fibre Channel Storage Device System Battery Control Panel Assembly (Service-Only Procedure) Chassis Intrusion Switch (Service-Only Procedure) SAS Backplane (Service-Only Procedure) Peripheral Interposer Board Fan Interposer Board (Service-Only Procedure) System Board (Service-Only Procedure) Power Distribution Board (Service-Only Procedure) Processor Expansion Module Board (Service- Only Procedure)

This section describes how to install the following system components:

- Front bezel
- System cover
- Cooling fan modules
- Cooling shroud assembly
- Power supplies
- Processor expansion module (PEM)
- Expansion cards
- Riser board
- RAC card
- Internal USB memory key
- TOE/iSCSI key
- SD memory card
- NIC daughter card
- System memory
- Processors
- Optical drive
- Hard drives
- SAS controller card
- RAID battery
- External SAS tape drive
- External Fibre Channel device
- System battery
- Control panel assembly
- Chassis intrusion switch
- SAS backplane board
- Peripheral interposer board
- Fan interposer board
- System board
- Power distribution board
- Processor expansion module board

## Recommended Tools

You may need the following items to perform the procedures in this section:

- Key to the system keylock
- #2 Phillips screwdriver
- T10 Torx driver
- Small flat-blade screwdriver
- Wrist grounding strap

## Inside the System

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

In Figure 3-1, the bezel, system cover, processor expansion module, and cooling shroud assembly are removed to provide an interior view of the system.

| NOTICE: Do not remove the cooling shroud assembly if the system is turned on. The cooling shroud assembly must be installed to direct the airflow from the fans.

Figure 3-1. Inside the System

1 | fan modules (4) | 2 | memory modules (16)
3 | heatsink/processor (2) | 4 | riser card
5 | cooling shroud assembly | 6 | processor expansion module
7 | NIC daughter card | 8 | expansion card slots (7)
9 | SAS controller card | 10 | optional RAC

The system board holds the system's control circuitry and other electronic components. The processors and memory modules are installed on the system board, and on the optional processor expansion module (PEM).

The hard-drive bays provide space for up to eight optional 2.5-inch hard drives or five optional 3.5-inch SAS hard drives. The hard drives connect to a SAS controller card or an optional battery-cached SAS RAID controller card through a SAS backplane. A removable drive carrier supports an optional optical drive.

## Removing and Replacing the Optional Front Bezel

1. Unlock the keylock at the left end of the bezel.
2. Rotate the left end of the bezel away from the front panel.
3. Unhook the right end of the bezel and pull the bezel away from the system.

Figure 3-2. Removing and Replacing the Optional Front Bezel

1 | bezel | 2 | key lock

To replace the optional bezel, hook the right end of the bezel onto the chassis, then fit the free end of the bezel onto the system. Secure the bezel with the keylock. See Figure 3-2.

## Opening and Closing the System

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

| CAUTION: Whenever you need to lift the system, get others to assist you. To avoid injury, do not attempt to lift the system by yourself.

### Opening the System

1. Unless you are installing a hot-plug component such as a cooling fan or hard-disk drive, turn off the system and attached peripherals, and disconnect the system from the electrical outlet and peripherals.
2. Rotate the latch release lock on the latch in a counter clockwise direction to the unlocked position. See Figure 3-3.
3. Lift up on the latch on top of the system and slide the cover back. See Figure 3-3.
4. Grasp the cover on both sides and carefully lift the cover away from the system.

Figure 3-3. Removing and Replacing the System Cover

1 | latch | 2 | latch release lock
3 | chassis hooks |  |

### Closing the System

1. Lift up the latch on the cover.
2. Align the cover with the left and right edges of the system and offset it slightly towards the back of the system, so that the pins on the inner edge of the cover are aligned with the chassis hooks. See Figure 3-3.
3. Lower the cover onto the chassis and close the latch.
4. Rotate the latch release lock in a clockwise direction to secure the cover.

## Cooling Fans

This system contains four hot-plug cooling fans, connected directly to the system board.

| NOTICE: In the event of a problem with a particular fan, the fan's number is referenced by the system's management software, allowing you to easily identify and replace the proper fan.

### Removing a Cooling Fan

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

| NOTE: The procedure for removing each individual fan module is the same.

1. Open the system. See Opening the System.
2. Compress the two latches on the top of the fan, then remove the fan. See Figure 3-4.

Figure 3-4. Removing and Replacing a Cooling Fan

1 | fan | 2 | latches (2)
3 | fan power connector | 4 | fan-bay power connector
5 | FAN4 | 6 | FAN2
7 | FAN1 | 8 | FAN3

### Replacing a Cooling Fan

| NOTE: The procedure for installing each individual fan is the same.

1. Ensure that the fan handle is upright and lower the fan into its retention base until the fan is fully seated. Then lower the fan handle until it snaps into place. See Figure 3-4.
2. Close the system. See Closing the System.

## Cooling Shroud Assembly

### Removing the Cooling Shroud Assembly

| NOTICE: Do not operate the system without the cooling shroud assembly. The cooling shroud assembly must be installed to direct the airflow from the fans.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the processor expansion module (PEM). See Removing the PEM or PEM Shell.
4. Remove the cooling shroud assembly by lifting the shroud by the corners. See Figure 3-5.

Figure 3-5. Removing and Replacing the Cooling Shroud Assembly

1 | cooling shroud assembly | 2 | snaps (4)
3 | alignment pins (4) |  |

### Replacing the Cooling Shroud Assembly

1. Slowly lower the shroud assembly straight down into the system. The snaps on the four corners of the shroud fit over the four corresponding alignment pins on the system board. See Figure 3-5.
2. Gently press down on the shroud assembly until it is fully seated. The upper surface of the shroud should be flush with the fan bays when the shroud assembly is correctly installed.

## Power Supplies

Your system supports two power supplies. The second power supply serves as a redundant, hot-plug power source.

| NOTICE: The system is only in the redundant mode when two power supplies are installed and both power supplies are connected to an AC power source. If some third-party components (such as PCI cards) not tested or supported by Dell are installed, the power supplies may not be redundant at all input voltages.

| NOTICE: Operating the system with only one power supply installed for extended periods of time can cause the system to overheat.

### Removing a Power Supply

1. Disconnect the power cable from the power source and the power supply you intend to remove and remove the cables from the cable strain-relief loop.
2. Press the lever release latch, then open the release lever and slide the power supply out of the chassis. See Figure 3-6.

| NOTE: You may have to unlatch and lift the cable management arm if it interferes with power-supply removal. For information about the cable management arm, see the system's Rack Installation Guide.

Figure 3-6. Removing and Replacing a Power Supply

1 | power supply | 2 | release lever
3 | lever release latch |  |

### Replacing a Power Supply

1. Holding the lever in the open position, slide the new power supply into the chassis until the lever contacts the system chassis. See Figure 3-6.
2. Close the release lever until the power supply is fully seated and the lever snaps into place behind the lever release latch. See Figure 3-6.

| NOTE: If you unlatched the cable management arm in step 2 of the previous procedure, relatch it. For information about the cable management arm, see the system's Rack Installation Guide.

1. Connect the power cable to the power supply and plug the cable into a power outlet.

| NOTICE: When connecting the power cable, insert the cable through the strain-relief loop.

| NOTE: After installing a new power supply in a system with two power supplies, allow several seconds for the system to recognize the power supply and determine its status. The power-supply status indicator turns green to signify that the power supply is functioning properly (see Figure 1-4).

## Processor Expansion Module

There are two types of processor expansion module assemblies used with your system:

- If you have a four-processor system, the processor expansion module (PEM) contains a processor expansion module board with two processor sockets and 16 memory module sockets.
- If you have a two-processor system, the processor expansion module shell (PEM shell) contains an air baffle.

| NOTICE: The PEM shell must be installed in a two-processor system to ensure adequate cooling airflow within the system.

### Removing the PEM or PEM Shell

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Lift the handle on the PEM until the PEM is fully disengaged from the chassis. See Figure 3-7

Figure 3-7. Installing and Removing a PEM

1 | processor expansion module | 2 | handle
3 | guide pins (6) | 4 | slots (6)

| NOTICE: Use two hands to lift the PEM from the chassis.

1. Lift the PEM from the chassis.
2. If you are removing a 4-processor PEM, carefully turn the PEM upside down and rotate the handle so it is in the closed position, before placing the PEM on a work surface. See Figure 3-8.

Figure 3-8. PEM in Service Position

1 | PEM | 2 | cooling shroud
3 | handle in service position |  |

To access the PEM board, remove the cooling shroud. See Figure 3-9.

Figure 3-9. Removing and Installing the PEM Cooling Shroud

1 | cooling shroud | 2 | alignment pins (4)
3 | snaps (4) |  |

### Replacing the PEM or PEM Shell

1. Replace the cooling shroud
2. Rotate the PEM so the PEM board (4-processor systems) or air baffles (2- processor systems) face downwards.
3. Rotate the PEM handle to the fully open position.
4. Align the three guide pins on each side of the PEM with the corresponding slots in the sides of the chassis. See Figure 3-7.
5. Lower the PEM into the system and rotate the PEM handle until the PEM is fully seated in the chassis.

## Expansion Cards

### Expansion Card Installation Guidelines

Your system supports up to eight PCI-Express (PCIe) expansion cards installed in connectors on the system board (see Figure 3-10).

- All slots support full-height, half-length cards.
- Up to two 25-W cards are supported; the remaining cards must be 15-W cards.
- Slots 1, 2, 5, 6, and 7 are x4 lane-width PCIe expansion slots.
- Slots 3 and 4 are x8 lane-width PCIe expansion slots.
- One expansion slot, labeled INT_STORAGE, is reserved for the system's SAS controller card.
- If you are installing a Remote Access Control (RAC) card, it must be installed in the special card slot marked RAC_CONN. See RAC Card

Figure 3-10. Expansion Slots

1 | PCIE_X4_7 | 2 | PCIE_X4_6
3 | PCIE_X4_5 | 4 | PCIE_X8_4
5 | PCIE_X8_3 | 6 | PCIE_X4_2
7 | PCIE_X4_1 | 8 | INT_ STORAGE
9 | RAC_CONN |  |

### Installing an Expansion Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Unpack the expansion card and prepare it for installation.

For instructions, see the documentation accompanying the card.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. If you are adding a new card, select the appropriate expansion card slot. See Expansion Card Installation Guidelines.
4. Open the expansion-card retainer and remove the filler bracket. See Figure 3-11.
5. Install the expansion card:
   1. Holding the card by its edges, position the card so that the card-edge connector aligns with the expansion-card connector on the system board.

| NOTICE: If you are installing a SAS RAID controller card, do not press on the memory module when installing the card.

1. Insert the card-edge connector firmly into the expansion-card connector until the card is fully seated.
2. Close the expansion-card retainer. See Figure 3-11.

Figure 3-11. Installing or Removing an Expansion Card

1 | expansion card | 2 | expansion-card retainer
3 | card-edge connector |  |

1. Connect any cables to the expansion card.
   - If you are installing a RAC card, see RAC Card.
   - If you are installing a SAS controller card, see Installing a SAS Controller Card.
2. Close the system. See Closing the System.

### Removing an Expansion Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Disconnect all cables from the card.
4. Remove the expansion card:
   1. Open the expansion-card retainer. See Figure 3-11.
   1. Grasp the expansion card by its edges, and carefully remove it from the expansion-card connector.
5. If you are removing the card permanently, install a metal filler bracket over the empty expansion slot opening and close the expansion-card retainer.

| NOTE: You must install a filler bracket over an empty expansion slot to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside the system.

1. Close the system. See Closing the System.

## Riser Board

Two riser boards are available for your system:

- A 2-processor (2P) riser board
- A 4-processor (4P) riser board.

Figure 3-12. Riser Boards

1 | 4-processor riser board | 2 | 2-processor riser board

### Removing the Riser Board

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM. See Removing the PEM or PEM Shell.
4. To remove the riser board, lift both riser retention latches until the riser is released from its socket, then lift the riser board from the chassis. See Figure 3-13.

Figure 3-13. Installing or Removing a Riser Board

1 | riser board | 2 | retention latches (2)
3 | riser board socket | 4 | riser guide posts (2)

### Replacing the Riser Board

1. To install the riser board, make sure both riser retention latches are completely open, then align the riser with the two riser guide posts on the system board until the riser is released from its socket, and then lift the riser board from the chassis. See Figure 3-13.
2. Close both retention latches at the same time until the latches are horizontal and the riser card is locked into place.
3. Reinstall the PEM. See Replacing the PEM or PEM Shell.
4. Close the system. See Closing the System.
5. Reconnect the system and peripherals to their power sources.

## RAC Card

### Installing an Optional RAC Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the plastic filler plug from the system back panel. See Figure 1-3.
4. Temporarily remove the storage controller card from the expansion slot labeled INTERNAL STORAGE:
   1. Disconnect all cables from the card.
   1. Grasp the storage controller card by its edges, and carefully remove it from the card connector.
5. Install the RAC card in the slot labeled RAC_CONN:
   1. Angle the RAC card so that the NIC connector fits through the back- panel RAC NIC opening. See Figure 3-14.
   1. Position the card so that the card-edge connector aligns with the expansion-card connector.
   2. Insert the card-edge connector firmly into the expansion-card connector until the card is fully seated.
6. Connect the 50-pin management cable and the 44-pin MII cable supplied with the RAC to the two connectors on the RAC card (see Figure 3-14), and to the two corresponding connectors on the system board (see Figure 7-1).

Figure 3-14. RAC Card Connectors

1 | RJ-45 RAC NIC connector | 2 | 44-pin MII cable connector
3 | 50-pin management cable connector |  |

1. Reinstall the storage controller card.
2. Reconnect all cables to the storage controller card.
3. Close the system. See Closing the System.
4. Reconnect the system and peripherals to their power sources, and turn them on.
5. Enter the System Setup program and verify that the setting for the Boot Sequence has changed to reflect the presence of the RAC card. See Using the System Setup Program.
6. Exit the System Setup program and reboot the system.

When the system boots, the Remote Access Controller Detected message displays and the option ROM and firmware information for the RAC displays.

Press <Ctrl><e> to enter the RAC configuration screen. See the RAC documentation for information on configuring and using the RAC.

## Internal USB Memory Key (Optional)

Your system provides an internal USB connector located on the system board for use with an optional USB flash memory key (see Figure 7-1). The USB memory key can be used as a boot device, security key, or mass storage device. To use the internal USB connector, the Internal USB Port option must be enabled in the Integrated Devices screen of the System Setup program.

To boot from the USB memory key, you must configure the USB memory key with a boot image and then specify the USB memory key in the boot sequence in the System Setup program. See Using the System Setup Program. For information on creating a bootable file on the USB memory key, see the user documentation that accompanied the USB memory key.

### Installing the Optional Internal USB Memory Key

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
2. Open the system. See Opening the System.
3. Locate the USB connector on the system board (see Figure 7-1).
4. Insert the USB memory key into the USB connector onto the board. See Figure 3-15.

Figure 3-15. Installing a USB Memory Key

1 | USB memory key | 2 | USB memory key connector

1. Close the system. See Opening the System.
2. Reconnect the system to power and restart the system.
3. Enter the System Setup program and verify that the USB key has been detected by the system. See Using the System Setup Program.

## TOE/iSCSI Key (Optional)

TOE, iSCSI, and other future functionalities for the system's integrated NICs are enabled by installing an optional NIC hardware key in the TOE_KEY socket on the system board.

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

| NOTE: TOE Operating system support and the Microsoft® scalable network pack are required for TOE functionality.

| NOTE: When future NIC functionality is supported, you must replace the original TOE/iSCSI hardware key with a new hardware key.

1. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
2. Open the system. See Opening the System.
3. Locate the TOE/iSCSI key connector on the system board (see Figure 7-1).

If you have an expansion card installed in slot 7, you may have to remove the card. See Removing an Expansion Card.

1. Insert the TOE/iSCSI key into the connector onto the board. See Figure 3-16.

Figure 3-16. Installing a TOE/iSCSI Key

1 | TOE/iSCSI key | 2 | TOE/iSCSI key connector

1. If applicable, reinstall the expansion card in slot 7. See Installing an Expansion Card.
2. Close the system. See Opening the System.
3. Reconnect the system to power and restart the system.

## SD Memory Card

You can install an optional SD memory card in a connector on the system board.

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
2. Open the system. See Opening the System.
3. Locate the SD card connector on the system board (see Figure 7-1).
4. Insert the SD card connector into the connector onto the board. See Figure 3-17.

Figure 3-17. Installing an SD Card

1 | SD card | 2 | SD card connector

1. Close the system. See Opening the System.
2. Reconnect the system to power and restart the system.

## NIC Daughter Card

The NIC daughter card provides two NICs, in addition to the two on the system board.

### Installing the NIC Daughter Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. If you have expansion cards installed in slots 6 and 7, remove the cards temporarily to install the card. See Removing an Expansion Card.
4. Angle the card so that its NIC connectors are positioned toward the back- panel card opening. See Figure 3-18.

Figure 3-18. Installing and Removing a NIC Daughter Card

1 | retention standoff (2) | 2 | NIC daughter card connector
3 | retention standoff holes (2) | 4 | NIC daughter card
5 | support standoff | 6 | cutout

1. Straighten the card so that the cutouts on the side edges of the card insert into the two support standoffs. See Figure 3-18.
2. Slide the card back slightly and align the front edge of the NIC card with the two front plastic retention standoffs adjacent to the system board connector, and press down the side of the card until it is fully seated. See Figure 3-18.

When the front of the card is fully seated, the plastic standoff snaps over the edge of the card.

1. If applicable, reinstall the expansion cards in slots 6 and 7. See Installing an Expansion Card.
2. Close the system. See Opening the System.
3. Reconnect the system to power and restart the system.

### Removing the NIC Daughter Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. If you have expansion cards installed in slots 6 and 7, you must remove the cards temporarily to remove the NIC card. See Removing an Expansion Card.
4. Pull back slightly on the two blue retention standoff tabs at the front edge of the card and gently lift the edge of the NIC card off of the standoffs.

As the card releases from the standoffs, the connector under the NIC card disengages from the system board connector.

1. Slide the card back from the two support standoffs and lift the card out of the system.

## System Memory

You can upgrade your system memory to a maximum of 128 GB (two-processor configurations) or 256 GB (four-processor configurations) by installing sets of 512-MB, 1-GB, 2-GB, 4-GB, or 8-Gb (when available) memory modules. 667-MHz registered DDR-II memory modules are supported in all memory sizes. 2-GB and 4-GB (when available) 800-Mhz memory modules are also supported in restricted configurations.

Sixteen memory sockets are located on the system board under the cooling shroud assembly. In four-processor systems, sixteen additional sockets are located on the processor expansion module board (PEM). Each processor has two memory channels, organized in sets of four memory module slots per channel.

Your system hardware supports Non-Uniform Memory Architecture (NUMA). Each processor has its own memory controller and local memory for reduced access times, but it can also access memory from another processor. This architecture improves system performance if an operating system is installed that supports this feature.

| NOTICE: To enable NUMA, run the System Setup program and disable the Node Interleaving option. See Using the System Setup Program.

### General Memory Module Installation Guidelines

To ensure optimal performance of your system, observe the following guidelines when configuring your system memory.

- Memory modules must be installed in pairs, beginning with the first two sockets in each set of memory modules. These sockets are marked by white retention levers.
- All memory modules must be identical in speed and technology. The two memory modules in each pair must be the same size.

Memory can either be installed in a two-processor configuration (Table 3-1) or a four-processor configuration (Table 3-2).

Table 3-1. Examples of Two-Processor Memory Configurations

Total System Memory | Memory Modules – Number, Size and Speed | Memory Module Locations
--- | --- | ---
2 GB | Four 512 MB, 667 MHz | A1, A2, B1, B2
4 GB | Four 1 GB, 667 MHz | A1, A2, B1, B2
4 GB | Eight 512 MB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4
6 GB | Twelve 512 MB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6
8 GB | Four 2 GB, 667 MHz | A1, A2, B1, B2
8 GB | Eight 1 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4
16 GB | Four 4 GB, 667 MHz | A1, A2, B1, B2
16 GB | Eight 4 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4
16 GB | Sixteen 1 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8
16 GB | Eight 2 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4
24 GB | Sixteen 2 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6
32 GB | Four 8 GB, 667 MHz | A1, A2, B1, B2
32 GB | Eight 8 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4
32 GB | Sixteen 2 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8
48 GB | Twelve 4 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6
64 GB | Eight 8 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4
96 GB | Twelve 8 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6
128 GB | Sixteen 8 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8

Table 3-2. Examples of Four-Processor Memory Configurations

Total System Memory | Memory Modules – Number, Size and Speed | Memory Module Locations
--- | --- | ---
4 GB | Eight 512 MB, 667 MHz | A1, A2, B1, B2, C1, C2, D1, D2
8 GB | Eight 1 GB, 667 MHz | A1, A2, B1, B2, C1, C2, D1, D2
16 GB | Eight 2 GB, 667 MHz | A1, A2, B1, B2, C1, C2, D1, D2
16 GB | Eight 2 GB, 800 MHz* | A1, A2, B1, B2, C1, C2, D1, D2
24 GB | Twenty-four 1 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6, C1, C2, C3, C4, C5, C6, D1, D2, D3, D4, D5, D6
32 GB | Eight 4 GB, 667 MHz | A1, A2, B1, B2, C1, C2, D1, D2
32 GB | Eight 4 GB, 800 MHz* | A1, A2, B1, B2, C1, C2, D1, D2
32 GB | Sixteen 2 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4
32 GB | Sixteen 2 GB, 800 MHz* | A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4
32 GB | Thirty-two 1 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8, C1, C2, C3, C4, C5, C6, C7, C8, D1, D2, D3, D4, D5, D6, D7, D8
48 GB | Twenty-four 2 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6, C1, C2, C3, C4, C5, C6, D1, D2, D3, D4, D5, D6
64 GB | Eight 8 GB, 667 MHz | A1, A2, B1, B2, C1, C2, D1, D2
64 GB | Sixteen 4 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4
64 GB | Sixteen 4 GB, 800 MHz* | A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4
64 GB | Thirty-two 2 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8, C1, C2, C3, C4, C5, C6, C7, C8, D1, D2, D3, D4, D5, D6, D7, D8
96 GB | Twenty-four 4 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6, C1, C2, C3, C4, C5, C6, D1, D2, D3, D4, D5, D6
128 GB | Sixteen 8 GB, 667 MHz | A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4
128 GB | Thirty-two 4 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8, C1, C2, C3, C4, C5, C6, C7, C8, D1, D2, D3, D4, D5, D6, D7, D8
192 GB | Twenty-four 8 GB, 667 MHz | A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6, C1, C2, C3, C4, C5, C6, D1, D2, D3, D4, D5, D6
256 GB | Thirty-two 8 GB, 667 MHz | A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8, C1, C2, C3, C4, C5, C6, C7, C8, D1, D2, D3, D4, D5, D6, D7, D8
* 2-GB 800 MHz and 4-GB 800 MHz memory modules will be supported when available 800-MHz memory modules are limited to a maximum of four modules per processor. If more than four modules are installed per processor, the system will downclock them to 667 MHz.

### Installing Memory Modules

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

| CAUTION: The memory modules are hot to the touch for some time after the system has been powered down. Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges and avoid touching the components on the memory module.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM (four-processor configurations) or PEM shell (two- processor configurations). See Removing the PEM or PEM Shell.
4. Remove the cooling shroud assembly:
   - If you are installing memory modules on the system board, see Removing the Cooling Shroud Assembly.
   - If you are installing memory modules on the PEM, see Figure 3-9.
5. Locate the memory module sockets. See Figure 7-1 or Figure 7-2.
6. Press the ejectors on the memory module socket down and out, as shown in Figure 3-19, to allow the memory module to be inserted into the socket.
7. Handle each memory module only on either card edge, ensuring not to touch the middle of the memory module.

Figure 3-19. Installing and Removing a Memory Module

1 | memory module | 2 | memory module socket ejectors (2)
3 | alignment key |  |

1. Align the memory module's edge connector with the alignment key of the memory module socket, and insert the memory module in the socket.

| NOTE: The memory module socket has an alignment key that allows you to install the memory module in the socket in only one way.

1. Press down on the memory module with your thumbs while pulling up on the ejectors with your index fingers to lock the memory module into the socket.

When the memory module is properly seated in the socket, the ejectors on the memory module socket align with the ejectors on the other sockets that have memory modules installed.

1. Repeat step 6 through step 9 of this procedure to install the remaining memory modules. See Table 3-1 or Table 3-2.
2. Replace the cooling shroud assembly:
   - If you are installing memory modules on the system board, see Replacing the Cooling Shroud Assembly.
   - If you are installing memory modules on the PEM, see Figure 3-9.
3. Replace the PEM. See Replacing the PEM or PEM Shell.
4. Close the system. See Closing the System.
5. Start up the system, press <F2> to enter the System Setup program, and check the System Memory setting on the main System Setup screen.

The system should have already changed the value to reflect the newly installed memory.

1. If the value is incorrect, one or more of the memory modules may not be installed properly. Repeat step 2 through step 14 of this procedure, checking to ensure that the memory modules are firmly seated in their sockets.
2. Run the system memory test in the system diagnostics. See Running the System Diagnostics.

### Removing Memory Modules

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

| CAUTION: The memory modules are hot to the touch for some time after the system has been powered down. Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges and avoid touching the components on the memory module.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM. See Removing the PEM or PEM Shell.
4. Remove the cooling shroud assembly:
   - If you are removing memory modules on the system board, see Removing the Cooling Shroud Assembly.
   - If you are removing memory modules on the PEM, see Figure 3-9.
5. Locate the memory module sockets. See Figure 7-1.
6. Press down and out on the ejectors on each end of the socket until the memory module pops out of the socket. See Figure 3-19.

Handle each memory module only on either card edge, ensuring not to touch the middle of the memory module.

1. Replace the cooling shroud assembly:
   - If you are removing memory modules on the system board, see Replacing the Cooling Shroud Assembly.
   - If you are removing memory modules on the PEM, see Figure 3-9.
2. Replace the PEM. See Replacing the PEM or PEM Shell.
3. Close the system. See Closing the System.

## Processors

Your system supports either two or four processors. You can upgrade processors to take advantage of future options in speed and functionality. Each processor and its associated internal cache memory are contained in a land grid array (LGA) package that is installed in a socket on the system board or processor expansion module.

| NOTICE: All processors must have the same frequency and core voltage.

### Removing a Processor

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Prior to upgrading your system, download and install the latest system BIOS version from support.dell.com.
2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
3. Open the system. See Opening the System.
4. Remove the PEM. See Removing the PEM or PEM Shell.
5. Remove the cooling shroud assembly:
   - If you are removing a processor on the system board, see Removing the Cooling Shroud Assembly.
   - If you are removing a processor on the PEM, see Figure 3-9.

| CAUTION: The processor and heat sink can become extremely hot. Be sure the processor has had sufficient time to cool to a lower temperature before handling.

| NOTICE: When you remove the heat sink, the possibility exists that the processor might adhere to the heat sink and be removed from the socket. It is recommended that you remove the heat sink while the processor is warm.

| NOTICE: Never remove the heat sink from a processor unless you intend to remove the processor. The heat sink is necessary to maintain proper thermal conditions.

1. Loosen one of the heat-sink retention screws. See Figure 3-20.

Figure 3-20. Removing and Installing the Heat Sink

1 | heat sink | 2 | heat-sink retention screws (2)

1. Wait 30 seconds for the heat sink to loosen from the processor.
2. Loosen the second heat-sink retention screw.
3. If the heat sink does not separate from the processor, carefully rotate the heat sink in a clockwise, then counterclockwise, direction until it releases from the processor. Do not pry the heat sink from the processor.
4. Lift the heat sink off of the processor and set the heat sink upside down.
5. Use a clean lint-free cloth to remove any thermal grease from the surface of the processor shield.
6. Pull the socket-release lever 90 degrees upward until the processor is released from the socket. See Figure 3-21.

Figure 3-21. Removing and Installing the Processor

1 | socket-release lever | 2 | processor
3 | processor shield | 4 | socket keys (2)
5 | socket |  |

1. Open the processor shield and then lift the processor out of the socket. Leave the release lever up so that the socket is ready for the new processor.

| NOTICE: Be careful not to bend any of the pins on the socket when removing the processor. Bending the pins can permanently damage the socket and system board.

### Installing a Processor

1. Unpack the new processor.
2. Align the processor with the two socket keys on the socket. See Figure 3-21.
3. If you are adding a processor to an empty socket, perform the following steps:
   1. Remove the protective cover from the processor socket.
   1. Pull the socket-release lever 90 degrees upward. See Figure 3-21.
   2. Lift the processor shield. See Figure 3-21.
4. Install the processor in the socket.

| NOTICE: Positioning the processor incorrectly can permanently damage the system board or the processor when you turn the system on.

1. If the release lever on the processor socket is not fully open, move it to that position.

1. With the processor and the socket keys aligned, set the processor lightly in the socket.

| NOTICE: Do not use force to seat the processor. When the processor is positioned correctly, it fits easily into the socket.

1. Close the processor shield. See Figure 3-21.
2. Rotate the socket release lever back down until it snaps into place, securing the processor. See Figure 3-21.

1. Install the heat sink.

| NOTE: If you did not receive a replacement heat sink, use the heat sink that you removed in step 10.

1. If you receive a heat sink and pre-applied thermal grease with your processor kit, remove the protective sheet from the thermal grease layer on top of the heat sink. See Figure 3-20.

If you did not receive a replacement heat sink with your processor kit, apply new thermal grease:

- Using a clean lint-free cloth, remove the existing thermal grease from the heat sink.
- Open the grease packet included with your processor kit and apply thermal grease evenly to the top of the processor.

1. Place the heat sink onto the processor. See Figure 3-20.
2. While pressing down on the heat, secure the heat sink by tightening the two retention screws until resistance is felt. See Figure 3-20.

1. Replace the cooling shroud assembly:
   - If you are adding a processor on the system board, see Replacing the Cooling Shroud Assembly.
   - If you are adding a processor on the PEM, see Figure 3-9.
2. Replace the PEM. See Replacing the PEM or PEM Shell.
3. Close the system. See Closing the System.
4. Restart the system.

As the system boots, it detects the presence of the new processor(s) and automatically changes the system configuration information in the System Setup program.

1. Press <F2> to enter the System Setup program, and check that the processor information matches the new system configuration.

See Using the System Setup Program for instructions about using the System Setup program.

1. Run the system diagnostics to verify that the new processor operates correctly.

See Running the System Diagnostics for information about running the diagnostics.

## Installing an Optical Drive

The optional slimline optical drive is mounted on a tray that slides into the front panel and connects to the controller on the system board through the SAS backplane.

| NOTE: DVD devices are data only.

1. Turn off the system, including any attached peripherals, and disconnect the system from its electrical outlet.
2. Remove the bezel. See Removing and Replacing the Optional Front Bezel.
3. To remove the drive carrier, pull the release latch forward, then slide the carrier out of the chassis. See Figure 3-20.
4. Remove the optical drive filler plate from the carrier:
   1. Loosen the thumbscrew from the latch securing the optical drive or filler plate. See Figure 3-22.
   1. Remove the latch.
   2. Lift the optical drive filler plate from the carrier.

Figure 3-22. Installing an Optical Drive in the Drive Carrier

1 | optical drive carrier | 2 | optical drive
3 | interface board | 4 | plastic rivets (2)
5 | latch | 6 | thumbscrew

1. Install the new optical drive in the carrier. See Figure 3-22.

The pins on the carrier fit into the corresponding holes in the side of the drive.

1. Attach the interface board to the back of the carrier, using the two plastic rivets. See Figure 3-22.
2. Reinstall the latch and tighten the thumbscrew.
3. Slide in the drive carrier until the tray snaps into place. See Figure 3-20
4. Replace the front bezel, if applicable. See Removing and Replacing the Optional Front Bezel.
5. Reconnect the system and peripherals to their electrical outlets.

## Hard Drives

Your system can accommodate up to eight 2.5" SAS hard drives or five 3.5-inch SAS hard drives. All drives connect to the system board through a SAS backplane board. See SAS Backplane (Service-Only Procedure) for information on these backplane options. Systems with an optional SAS RAID controller card support hot-plug drive operation. Figure 3-23 shows the ID numbers of the drives.

Figure 3-23. Hard-Drive ID Numbers

### Before You Begin

| NOTICE: Before you attempt to remove or install a drive while the system is running, see the documentation for the optional SAS RAID controller card to ensure that the host adapter is configured correctly to support hot-plug drive removal and insertion.

| NOTE: It is recommended that you use only drives that have been tested and approved for use with the SAS backplane board.

You may need to use different programs than those provided with the operating system to partition and format the hard drives.

| NOTICE: Do not turn off or reboot your system while the drive is being formatted. Doing so can cause a drive failure.

When you format a high-capacity hard drive, allow enough time for the formatting to be completed. Long format times for these drives are normal.

### Configuring the Boot Device

If you plan to boot the system from a hard drive, the drive must be attached to the primary (or boot) controller. The device that the system boots from is determined by the boot order specified in the System Setup program.

The System Setup program provides options that the system uses to scan for installed boot devices. See Using the System Setup Program for information about the System Setup program.

### Removing a Drive Blank

| NOTICE: To maintain proper system cooling, all empty hard-drive bays must have drive blanks installed. If you remove a hard-drive carrier from the system and do not reinstall it, you must replace the carrier with a drive blank.

1. Remove the bezel. See Removing and Replacing the Optional Front Bezel.
2. Insert your finger under the shrouded end of the blank and press in on the latch to eject the blank outward from the bay.
3. Pry the ends of the blank outward until the blank is free.

### Installing a Drive Blank

The drive blank is keyed to ensure correct insertion into the drive bay. To install a drive blank, insert and rotate in the keyed side of the blank into the drive bay and press evenly on the other end of the blank until it is fully inserted and latched.

### Removing a Hot-Plug Hard Drive

1. Remove the bezel. See Removing and Replacing the Optional Front Bezel.
2. From the RAID management software, prepare the drive for removal and wait until the hard-drive indicators on the drive carrier signal that the drive can be removed safely. See your SAS RAID controller documentation for information about hot-plug drive removal.

If the drive has been online, the green activity/fault indicator will flash as the drive is powered down. When both drive indicators are off, the drive is ready for removal.

1. Open the drive carrier release handle to release the drive. See Figure 3-24.
2. Slide the hard drive out until it is free of the drive bay.
3. If you do not replace the hard drive, insert a drive blank in the vacated drive bay. See Installing a Drive Blank.

| NOTICE: To maintain proper system cooling, all empty hard-drive bays must have drive blanks installed.

Figure 3-24. Removing and Installing a Hot-Plug Hard Drive

1 | hard drive | 2 | drive carrier
3 | drive carrier release handle |  |

### Installing a Hot-Plug Hard Drive

| NOTICE: When installing a hard drive, ensure that the adjacent drives are fully installed. Inserting a hard-drive carrier and attempting to lock its handle next to a partially installed carrier can damage the partially installed carrier's shield spring and make it unusable.

| NOTICE: Not all operating systems support hot-plug drive installation. See the documentation supplied with your operating system.

1. Remove the bezel. See Removing and Replacing the Optional Front Bezel.
2. If a drive blank is present in the bay, remove it. See Removing a Drive Blank.
3. Install the hot-plug hard drive.
   1. Open the handle on the hard-drive carrier.
   1. Insert the hard-drive carrier into the drive bay until the carrier contacts the backplane.
   2. Close the handle to lock the drive in place.
4. Replace the front bezel, if applicable. See Removing and Replacing the Optional Front Bezel.

### Replacing a Hard Drive in a Hard-Drive Carrier

To remove a hard drive from a drive carrier, remove the four screws from the slide rails on the hard-drive carrier and separate the hard drive from the carrier.

To install a new hard drive in a drive carrier, perform the following steps:

1. Insert the hard drive into the hard-drive carrier with the connector end of the drive at the back. See Figure 3-25.
2. If you are installing a 3.5" drive, align the bottom rear screw hole on the hard drive with the hole labeled "SAS" on the hard drive carrier.

When aligned correctly, the back of the hard drive will be flush with the back of the hard-drive carrier.

1. Attach the four screws to secure the hard drive to the hard-drive carrier. See Figure 3-25.

Figure 3-25. Installing a Hard Drive Into a Drive Carrier

1 | screws (4) | 2 | drive carrier
3 | hard drive |  |

## SAS Controller Cards

### Removing a SAS Controller Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Disconnect the data cable(s) from the controller card.
4. If you ar removing a battery-cached SAS RAID controller, disconnect the RAID battery cable from the card.
5. Remove the card from the expansion slot.

See Removing an Expansion Card.

### Installing a SAS Controller Card

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Install the controller card in the expansion slot labeled INTERNAL_STORAGE.

For instructions on installing the card, see Installing an Expansion Card.

1. Connect the card to the SAS backplane
   1. Connect the SAS data cable connector labelled "Controller 0" to the white connector on the card, and the connector labelled "Controller 1" to the black connector on the card. See Figure 3-26.
   1. Route the SAS data cable through the cable clips on the inner side of the chassis. Attach the connector labeled "BKPLN A" to connector SAS A on the backplane, and attach the connector labeled "BKPLN B" to connector SAS B on the backplane.

Figure 3-26. Installing a SAS RAID Controller

1 | RAID battery holder | 2 | RAID battery
3 | RAID battery cable | 4 | SAS Data cable
5 | SAS RAID controller card |  |

### Installing the SAS RAID Controller Card Battery

To install the RAID battery, insert the battery into the plastic battery holder on the inner side of the chassis, and connect the battery cable to the connector on the SAS RAID controller card next to the RAID memory module. See Figure 3-26.

## Connecting an External SAS Tape Drive

This subsection describes how to connect an external SAS tape drive to the optional external SAS controller card.

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Ground yourself by touching an unpainted metal surface on the back of the system and unpack the drive.
4. Unpack the tape drive and controller card.
5. Install the external SAS controller card in an expansion slot. See Installing an Expansion Card.
6. Connect the tape drive's interface cable to the drive.
7. Connect the other end of the interface cable to the external SAS connector on the controller card bracket.
8. Connect the tape drive's power cable to an electrical outlet.
9. Close the system. See Closing the System.
10. Reconnect the system and peripherals to their electrical outlets, and turn them on.
11. Perform a tape backup and verification test with the drive as instructed in the software documentation that came with the drive.

## Connecting an External Fibre Channel Storage Device

This subsection describes how to connect external Fibre Channel devices to an optional Fibre Channel HBA card.

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Ground yourself by touching an unpainted metal surface on the back of the system, unpack the drive, and compare the jumper and switch settings with those in the documentation that came with the drive.
4. Install the Fibre Channel HBA in an expansion slot. See Installing an Expansion Card.
5. Connect the end of the Fibre Channel cable to the connector on the HBA card bracket.
6. Close the system. See Closing the System.
7. Reconnect the system and peripherals to their electrical outlets, and turn them on.

## System Battery

The system battery is a 3.0-volt (V), coin-cell battery.

### Replacing the System Battery

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

| CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. See your System Information Guide for additional information.

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM. See Removing the PEM or PEM Shell.
4. Remove the cooling shroud assembly. See Removing the Cooling Shroud Assembly.
5. Locate the battery socket. See Figure 7-1.

| NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Ensure that the object is inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board.

| NOTICE: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery.

1. Remove the system battery. See Figure 3-27.
   1. Support the battery connector by pressing down firmly on the positive side of the connector.
   1. While supporting the battery connector, press the battery toward the positive side of the connector and pry it up out of the securing tabs at the negative side of the connector.

Figure 3-27. Replacing the System Battery

1 | positive side of battery connector | 2 | system battery
3 | negative side of battery connector |  |

| NOTICE: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery.

1. Install the new system battery.
   1. Support the battery connector by pressing down firmly on the positive side of the connector.
   1. Hold the battery with the "+" facing up, and slide it under the securing tabs at the positive side of the connector.
   2. Press the battery straight down into the connector until it snaps into place.
2. Replace the cooling shroud assembly. See Replacing the Cooling Shroud Assembly.
3. Replace the PEM. See Replacing the PEM or PEM Shell.
4. Close the system. See Closing the System.
5. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
6. Enter the System Setup program to confirm that the battery is operating properly. See Using the System Setup Program.
7. Enter the correct time and date in the System Setup program's Time and Date fields.
8. Exit the System Setup program.
9. To test the newly installed battery, turn off the system and disconnect it from the electrical outlet for at least an hour.
10. After an hour, reconnect the system to its electrical outlet and turn it on.
11. Enter the System Setup program and if the time and date are still incorrect, see Getting Help for instructions on obtaining technical assistance.

## Control Panel Assembly (Service-Only Procedure)

### Removing the Control Panel

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Disconnect the control panel data cable from the control panel board. See Figure 3-28.
4. Disconnect the display module cable from the control panel board. See Figure 3-28.
5. Remove the three Torx screws securing the control panel board to the system chassis and remove the board.
6. Remove the display module:
   1. Insert the end of a paper clip into the hole on the right side of the display module and gently pry the label off.
   1. Remove the two Torx screws that secure the display module to the system chassis.
7. Remove the display module from the chassis cutout.

Figure 3-28. Removing and Installing the Control Panel

1 | display module | 2 | display module cable
3 | control panel board | 4 | control panel board cable
5 | control panel board screws (3) | 6 | display module label
7 | display module screws (2) |  |

### Installing the Control Panel

1. Insert the control panel assembly display module into the chassis cutout and secure it with the two Torx screws.
2. Affix the control panel label to the display module.
3. Install the control panel board in the system chassis and secure with the three Torx screws. See Figure 3-28.
4. Connect the display module cable to the control panel board. See Figure 3-28.
5. Connect the control panel cable to the control panel board and secure the cable in the cable guides on the chassis.
6. Close the system. See Closing the System.
7. Replace the front bezel, if applicable. See Removing and Replacing the Optional Front Bezel.
8. Reconnect the system to the power source and turn on the system and attached peripherals.

## Chassis Intrusion Switch (Service-Only Procedure)

### Removing the Chassis Intrusion Switch

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Disconnect the intrusion-switch cable from its system board connector. See Figure 3-29.
4. Grasp the intrusion switch and slowly and firmly pull the switch out from the intrusion-switch clip.

Figure 3-29. Removing and Installing the Chassis Intrusion Switch

1 | intrusion switch | 2 | intrusion switch cable

### Installing the Chassis Intrusion Switch

1. Connect the intrusion-switch cable to its system board connector. See Figure 3-29.
2. Insert the switch into the opening in the chassis wall and gently, but firmly, press in the switch until it is fully seated. See Figure 3-29.
3. Close the system. See Closing the System.
4. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

## SAS Backplane (Service-Only Procedure)

### Removing the SAS Backplane

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. If applicable, remove the bezel. See Removing and Replacing the Optional Front Bezel.
2. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
3. Open the system. See Opening the System.
4. Remove the PEM. See Removing the PEM or PEM Shell.
5. Remove the cooling shroud assembly. See Removing the Cooling Shroud Assembly.

| NOTICE: To prevent damage to the drives and backplane, you must remove the SAS drives and optical drive carrier from the system before removing the backplane.

| NOTICE: You must note the number of each hard drive and temporarily label them before removal so that you can replace them in the same locations.

1. Remove all SAS hard drives. See Removing a Hot-Plug Hard Drive.
2. To remove the optical drive carrier, pull the release latch forward, then slide the carrier out of the chassis. See Figure 3-24.

| NOTICE: When disconnecting the control-panel cable, hold the white pull-tab next to the control-panel cable connector to prevent damage to the SAS backplane or the cable itself.

1. If you are removing a 3.5-inch drive backplane, disconnect the control-panel cable from the control-panel cable connector on the front of the backplane. See Figure 3-30.
2. Disconnect the SAS data and power cables from the back of the SAS backplane.
3. Remove the SAS backplane from the system:
   1. If you are removing a 2.5-inch drive backplane, press the spring-loaded blue retention tab towards the front of the system, slide the backplane upward. See Figure 3-30.

If you are removing a 3.5-inch drive backplane, pull the spring-loaded blue retention pin away from the front of the backplane, then slide the backplane upward. See Figure 3-31.

1. When the backplane cannot slide upward any farther, pull the backplane toward the back of the system to remove it from the retention hooks.
2. Lift the board out of the system, being careful to avoid damaging components on the face of the board.
3. Place the SAS backplane face down on a work surface.

Figure 3-30. Removing and Installing a 2.5-Inch SAS Backplane

1 | SAS A cable | 2 | SAS B cable
3 | backplane power cable | 4 | retention tab

Figure 3-31. Removing and Installing a 3.5" Drive SAS Backplane

1 | retention pin | 2 | SAS backplane
3 | control-panel cable connector | 4 | retention slots (7)
5 | installation alignment slot |  |

### Installing a SAS Backplane

1. Install the SAS backplane:
   1. Slowly lower the backplane into the system, being careful to avoid damaging components on the face of the board.
   1. Align the installation alignment slot on the bottom of the backplane with the alignment pin on the bottom of the chassis. See Figure 3-31.
   2. Slide the retention slots on the backplane over the retention hooks on the chassis.
   3. Slide the backplane downward until the blue retention pin snaps into place.
2. Connect the SAS, interface, and power cables to the SAS backplane.
3. Connect the control-panel cable to the front of the SAS backplane.
4. Install the SAS hard drives in their original locations. See Hard Drives.
5. Install the optical drive carrier.

Slide the drive carrier into its drive bay and press in the release latch. See Figure 3-20.

1. Replace the cooling shroud assembly. See Replacing the Cooling Shroud Assembly.
2. Replace the PEM. See Replacing the PEM or PEM Shell.
3. Close the system. See Closing the System.
4. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

## Peripheral Interposer Board

### Removing a Peripheral Interposer Board

| CAUTION: Any installation that requires removal of the system cover is intended solely to be performed by trained service technicians. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM. See Removing the PEM or PEM Shell.
4. Remove the cooling shroud assembly. See Removing the Cooling Shroud Assembly.
5. Disconnect the SAS data and backplane power cables from the back of the SAS backplane. See Figure 3-30 or Figure 3-31.
6. Disconnect the power cable from the top of the peripheral interposer board. See Figure 3-32.

| NOTICE: When disconnecting the control-panel cable, hold the pull-tab on the control-panel cable connector to prevent damage to the interposer board or the cable itself.

1. Disconnect the control-panel cable from the control-panel cable connector on the back of the interposer board. See Figure 3-32.
2. Disconnect the planar interface cable from the back of the interposer board.
3. Disconnect the SATA cable from the back of the interposer board.

Figure 3-32. Removing and Installing the Peripheral Interposer Board

1 | power cable to backplane | 2 | control panel cable | 3 | power cable from power distribution board
4 | planar interface cable | 5 | retention tab |  |

1. Remove the peripheral interposer board:
   1. Press the spring-loaded blue retention tab, then slide the board upward. See Figure 3-32.
   1. When the board cannot move upward any farther, pull the board toward the back of the system to remove it from the retention hooks.
   2. Lift the board out of the system, being careful to avoid damaging components on the face of the board.
   3. Place the interposer board aside on a work surface.

### Replacing a Peripheral Interposer Board

1. Install the peripheral interposer board:
   1. Carefully lower the interposer board into the system, being careful to avoid damaging components on the face of the board. See Figure 3-32.
   1. Align the installation alignment slot on the bottom of the interposer board with the alignment pin on the bottom of the chassis.
   2. Slide the retention slots on the interposer board over the retention hooks on the chassis.
   3. Slide the board downward until the blue retention tab snaps into place.
2. Connect the SATA, planar interface, and control panel cables to the back of the interposer board. See Figure 3-32.
3. Connect the power cable to the top of the interposer board.
4. Reconnect the SAS and backplane power cables to the back of the SAS backplane. See Figure 3-30 or Figure 3-31.
5. Replace the cooling shroud assembly. See Replacing the Cooling Shroud Assembly.
6. Replace the PEM. See Replacing the PEM or PEM Shell.
7. Close the system. See Closing the System.
8. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

## Fan Interposer Board (Service-Only Procedure)

### Removing a Fan Interposer Board

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.

| NOTICE: To prevent damage to the drives and backplane, you must remove the SAS drives and optical drive carrier from the system before removing the backplane. You must note the number of each hard drive and temporarily label them before removal so that you can replace them in the same locations.

1. To remove the optical drive carrier, pull the release latch forward, then slide the carrier out of the chassis. See Figure 3-24.
2. Remove fans 1 and 3 or 2 and 4 (depending on which fan interposer board is being replaced). See Removing a Cooling Fan.
3. Remove the SAS backplane (systems with 3.5" hard drives) or peripheral interposer board (systems with 2.5" hard drives). See SAS Backplane (Service-Only Procedure) or Peripheral Interposer Board.
4. Remove the two screws and remove the fan interposer board. See Figure 3-33.

Figure 3-33. Removing and Installing a Fan Interposer Board

1 | screws (2) | 2 | fan interposer board
3 | tabs (2) | 4 | slots (2)

### Installing a Fan Interposer Board

1. Slip the two securing tabs on the fan interposer board into the two slots on the side of the fan bay. See Figure 3-33.
2. Secure the fan interposer board with the two screws.
3. Replace the SAS backplane (systems with 3.5" hard drives) or peripheral interposer board (systems with 2.5" hard drives). See SAS Backplane (Service-Only Procedure) or Peripheral Interposer Board.
4. Install the fans. See Replacing a Cooling Fan.
5. Install the optical drive carrier.

Slide the drive carrier into its drive bay and press in the release latch. See Figure 3-20.

1. Install the SAS hard drives in their original locations. See Installing a Hot- Plug Hard Drive.
2. Close the system. See Closing the System.
3. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

## System Board (Service-Only Procedure)

### Removing the System Board

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM. See Removing the PEM or PEM Shell.
4. Remove the cooling shroud assembly. See Removing the Cooling Shroud Assembly.
5. Remove all expansion cards and the SAS controller card. See Removing an Expansion Card.
6. If installed, disconnect and remove the RAC card.
7. If installed, remove the internal USB key and SD card.
8. If installed, remove the TOE/iSCSI key.
9. Remove the riser board. See Removing the Riser Board.
10. Remove the NIC daughter card. See Removing the NIC Daughter Card.
11. Disconnect all cables from the system board.
12. Remove the RAID battery compartment:
    1. Lift the snap lever and gently pull the RAID battery compartment straight up. See Figure 3-34.
    1. Lift the battery compartment away from the side of the chassis.

Figure 3-34. Removing and Installing the RAID Battery Compartment

1 | RAID battery compartment | 2 | release tab
3 | securing tabs (2) | 4 | securing slots (2)

1. Remove the system board:
   1. Pull up the spring-loaded blue retention pin located in the center of the system board, and then slide the system board toward the front of the chassis until it stops. See Figure 3-35.
   1. Grasp the system board by the heat sinks, or by the riser board. To avoid twisting the board, do not lift the board by the corners.
   2. Slowly and evenly lift the system board above the retention hooks, ensuring that the system board is clear of all retention hooks.
   3. Lift the system board out of the chassis.

Figure 3-35. Removing and Installing the System Board

1 | retention pin | 2 | system board
3 | retention hook |  |

### Installing the System Board

1. Transfer the processors and heat sinks to the new system board. See Removing a Processor and Installing a Processor.
2. Remove the memory modules and transfer them to the same locations on the new board. See Removing Memory Modules and Installing Memory Modules.
3. Transfer the riser board to the new system board. See Removing the Riser Board and Replacing the PEM or PEM Shell.
4. Install the new system board:
   1. Holding the system board by the heat sinks, lower the right side of the system board into the chassis.
   1. Slowly lower the left side of the system board into the chassis.

| NOTE: Ensure that the power cables from the power distribution board do not impede the system board as you lower the system board into the chassis.

1. Slightly lift up the front of the system board and maneuver the system board to the bottom of the chassis until it lays completely flat.
2. Ensure that all retention hooks on the bottom of the chassis are inserted into the retention slots on the system board. See Figure 3-35.
3. Push the system board toward the back of the chassis until the blue retention pin snaps into place.

1. If applicable, transfer the internal USB key, SD card, and TOE/iSCSI key.
2. Install the RAID battery compartment:
   1. Insert the two securing tabs on the battery compartment into the two securing slots on the side of the chassis. See Figure 3-34.
   1. Press down the battery compartment to secure it.
3. Connect the cables in the order listed below (see Figure 7-1 and Figure 7-3 for the locations of the connectors on the system board and on the SAS backplane):
   - The three power distribution cables
   - SAS power cable SAS backplane power connector
   - Chassis intrusion switch cable
   - SATA interface cable
4. Install all expansion cards. See Installing an Expansion Card.
5. Reinstall the SAS controller card. See Installing a SAS Controller Card.
6. If applicable, reconnect the RAID battery cable to the SAS controller card.
7. If applicable, reinstall and connect the RAC card. See Installing an Optional RAC Card.
8. Reinstall the NIC daughter card. See Installing the NIC Daughter Card.
9. Install the optical drive carrier.

Slide the drive carrier into its drive bay and press in the release latch. See Figure 3-20.

1. Install the SAS hard drives in their original locations. See Installing a Hot- Plug Hard Drive.
2. Replace the riser card.
3. Replace the cooling shroud assembly. See Replacing the Cooling Shroud Assembly.
4. Replace the PEM.
5. Close the system. See Closing the System.
6. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
7. Replace the bezel. See Removing and Replacing the Optional Front Bezel.

## Power Distribution Board (Service-Only Procedure)

### Removing the Power Distribution Board

| CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the power supplies. See Removing a Power Supply.
4. Remove the system board. See Removing the System Board.
5. Remove the seven screws securing the board. See Figure 3-36.
6. Lift the power distribution board out of the chassis.

Figure 3-36. Removing and Installing the Power Distribution Board

1 | retention notches (3) | 2 | power distribution board
3 | screws (7) | 4 | retention tabs (3)

### Installing the Power Distribution Board

1. Position the three retention slots on the power distribution board with the three retention tabs on the bottom of the chassis. See Figure 3-36.
2. Secure the power distribution board with the seven screws.
3. Install the system board. See step 4 through step 14 in "Installing the System Board."
4. Install the power supplies. See Replacing a Power Supply.
5. Close the system. See Closing the System.
6. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

## Processor Expansion Module Board (Service- Only Procedure)

### Removing the PEM Board

1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See Opening the System.
3. Remove the PEM. See Removing the PEM or PEM Shell.
4. Remove the PEM cooling shroud. See Figure 3-9.
5. Remove the PEM board:
   1. Pull up the spring-loaded blue retention pin located in the center of the PEM board, and then slide the board toward the front of the PEM shell until it stops. See Figure 3-35.
   1. Lift the PEM board out of the PEM shell.

Figure 3-37. Removing and Installing the PEM Board

1 | retention pin | 2 | PEM board
3 | PEM shell | 4 | retention slots
5 | retention hooks |  |

### Replacing the PEM Board

1. Install the new PEM board:
   1. Lower the PEM board into the PEM shell.
   1. Ensure that the PEM board is completely parallel to the floor of the PEM shell, and that all retention hooks on the bottom of the PEM shell extend through the retention slots on the PEM board. See Figure 3-35.
   2. Slide the PEM board toward the back of the PEM shell until the blue retention pin snaps into place.
2. Transfer the processors and heat sinks to the new PEM board. See Removing a Processor and Installing a Processor.
3. Remove the memory modules and transfer them to the same locations on the new PEM board. See Removing Memory Modules and Installing Memory Modules.
4. Replace the PEM cooling shroud. See Figure 3-9
5. Replace the PEM in the system chassis.

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