Dell PowerEdge 2800 - Manual (Page 33)

The system board holds the system's control circuitry and other electronic components. The processor and memory are installed directly on the system board.
Using a riser card, the system can accommodate up to seven expansion cards.
The SCSI backplane supports up to eight SCSI hard drives. A removable drive carrier supports an optional diskette drive and optional optical drive. The
peripheral bays provide space for two half-height or one full-height 5 1/4-inch form factor devices, or two additional SCSI hard drives and a half-height 5 1/4-
inch form factor device. Power is supplied to the system board and drives through one or two (optional) power supplies.
Opening the System
The system is enclosed by an optional bezel and cover. To upgrade or troubleshoot the system, remove the bezel and cover to access the drives and internal
system components.
1. If applicable, remove the bezel. See Figure 5 -2 .
a. Unlock the keylock at the left end of the bezel.
b. While grasping the bezel, depress the release latch on the left edge of the bezel, adjacent to the keylock.
c. Rotate the left end of the bezel away from the front panel.
d. Unhook the right end of the bezel and pull the bezel away from the system.
Figure 5-2. Installing and Removing the Optional Bezel
2. Unless you are installing a hot-plug component such as a cooling fan or hot-plug expansion card, turn off the system and attached peripherals, and
disconnect the system from the electrical outlet and peripherals.
NOTE: The following procedure applies to rack systems. The procedure for a tower system is similar, except the keylock and release latch are at the
upper edge of the bezel when the system is upright.
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.