Dell 745N manual Removing and Replacing the Bezel

Figure 5-1. Inside the System

RAID controller (optional) fan assembly

daughter card (optional)

heat sink

power supply

	DIMMs
hard drives (2 or 4)	power distribution board

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.

Troubleshooting Your System

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