Installing System Components 83
4
If applicable, remove the expansion card from the rise r.
5
Press the release latch(e s) on the rise r board and lift the r iser board st raight up from the system boar d. See
Figure 3-22.
The left riser board has two release latches; the center riser board has one latch.

Installing an Expansion-Card Riser

CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not cover ed by your
warranty. Read and follow the safety instructions that came with the product.
1
Align the riser board with the alignment pins on the system board, then lower the board onto the pins.
2
Press down on the riser board until the edge connector(s) on the board is (are) fully seated in the riser
board connector on the system board. See Figure 3-22.
3
If applicable, install the expansion card in the expansion -card slot.
4
Close the system. See "Opening and Closing the System" on pag e 46.
5
Replace the bezel. See "Removing and Replacing the Front Bezel" on pag e 45.
6
Reconnect your system and peripherals to their electrical outlets, and turn on the system.

Backplane Board

Removing the Backplane Board

CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not cover ed by your
warranty. Read and follow the safety instructions that came with the product.
The removal procedure varies slightly, depending on which backplane bo ard you have in your system.
1
If applicable, remove the bezel. See "Removing and Replacing the Front Bezel" on page 45.
2
Turn off the system and attached periphe rals, and disconnect the system from the electr ical outlet.
3
Open the system. See "Opening and Closing the System" on pag e 46.
4
Remove the hard drives.
NOTICE: To properly reinstall the hard drives, ensure that you record which hard drive you remove from
which bay.
5
Disconnect the SAS cable and power cable from the backplane.
– If you are removing a 3.5-inch hard drive (two-drive) backplane, see Figure 3-23.
– If you are removing a 2.5-inch hard drive (four-drive) backplan e, see Figure 6-4.