Troubleshooting Your System 41
Figure 5-1. Inside the System
The system board holds the system's control circuitry and other electronic components. Several
hardware options such as the processor and memory are installed directly on the system board.
Using a riser board, the system can accommodate up to two expansion cards. The upper slot
supports PCI 32-bit, 33-MHz (5.0-V) expansion cards and the lower slot supports PCI-X 64-bit,
66-MHz (3.3-V) expansion cards.
NOTE: The connectors on 64-bit cards are longer than the 32-bit PCI connector in the system. However,
as long as the card is installed properly, the card will still function.
The hard-drive bays provide space for up to four SATA hard drives. Power is supplied to the system
board, hard drives, and internal peripherals through a single nonredundant power supply.
Removing and Replacing the Bezel
To access the hard drives or the front USB connector, you must first remove the system's bezel. To
remove the bezel, push the bezel release latches inward and pull the bezel away from the system.
See Figure 5-2.
daughter card (optional)
fan assembly
RAID controller (optional) heat sink
power distribution board
power supply
hard drives (2 or 4)
DIMMs
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