Dell 1950 owner manual Removing and Replacing the Front Bezel, Control panel, Sideplane, Backplane

1	control panel	2	SAS controller daughter card	3	sideplane
			or SAS RAID controller
			daughter card (optional)
4	cooling fan modules (4)	5	power supply bays (2)	6	left riser (slot 2)
7	center riser (slot 1)	8	battery	9	system board cooling shroud
10	memory modules (8)	11	heatsink/microprocessor (2)	12	backplane
13	two 3.5-inch or four 2.5-inch	14	optical slimline drive (optional)
	hard drive bays

The system board holds the system's control circuitry and other electronic components. Several hardware options, such as the microprocessors and memory, are installed directly on the system board. The left and center risers each have one slot and can accommodate up to two half-length PCI-X cards or two half- length PCIe expansion cards. For more information, see "Expansion Cards" on page 60.

The system provides space for one optional slimline optical drive. The optical drive tray connects to the controller on the system board through the sideplane board. For more information, see "Installing the Optical Drive Tray" on page 73.

The hard-drive bays provide space for up to two 3.5-inch or four 2.5-inch SAS/SATA hard drives. The hard drives connect to a SAS controller daughter card or a SAS RAID controller daughter card. For more information, see "Installing a Hot-Plug Hard Drive" on page 75.

During an installation or troubleshooting procedure, you may be required to change a jumper setting. For more information, see "Jumpers and Connectors" on page 115.

NOTE: There are no hot-pluggable components inside this system except for externally accessible components, such as the power supplies and the hard drives.

Removing and Replacing the Front Bezel

1The system is enclosed by an optional bezel. To upgrade or troubleshoot the system, remove the bezel and cover to access the internal system components. Unless you are installing a hot-plug hard drive, turn off the system and attached peripherals, and disconnect the system from the electrical outlet and peripherals.

NOTE: You do not need to remove the front bezel to remove the system cover.

2Using the system key, unlock the bezel.

3Press the tab at the left end of the bezel.

4Rotate the left end of the bezel away from the system to release the right end of the bezel.

5Pull the bezel away from the system. See Figure 3-2.

Installing System Components

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