To install a drive in a 5.25-inch drive bay, follow these steps:

1.Unpack the drive and prepare it for installation.

CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer.

Check the documentation that accompanied the drive to verify that the drive is configured for your com- puter system. Change any settings necessary for your configuration.

NOTE: If you are installing a non-EIDE tape drive, check the documentation for the drive to determine the jumper or switch settings used to designate the drive as drive address DS4 (not DS2 or DS3 as may be indicated in the drive documentation). Unless the drive is already set to drive 4, reconfigure its jumper or switch setting (see “Jumpers” and “Switches” in Chapter 5).

If you are installing an EIDE CD-ROM or EIDE tape drive, configure the drive for the Cable Select setting.

2.Remove the computer cover as instructed in “Removing the Computer Cover” in Chapter 5.

CAUTION: See “Protecting Against Electro- static Discharge” in the safety instructions at the front of this guide.

3.Remove the front bezel according to the instruc- tions in “Removing and Replacing the Front Bezel” found earlier in this chapter.

4.Remove the drive bracket from the bay you want to use.

Squeeze the metal tabs that extend from each side of the drive bracket toward each other, and pull the bracket out of the bay (see Figure 7-6).

NOTE: For easier access inside the chassis, you may want to rotate the power supply out of the way tem- porarily. To do so, see “Rotating the Power Supply Away From the System Board” in Chapter 5.

bracket tabs (2)

Figure 7-6. Removing a Drive

If a drive is already installed in the bay and you are replacing it, be sure to disconnect the DC power cable and interface cable from the back of the drive before sliding the bracket out of the bay. To remove the old drive from the bracket, turn the drive/bracket assembly upside down and unscrew the four screws that secure the drive to the bracket (see Figure 7-7).

5.Attach the bracket to the new drive.

Turn the drive upside down and locate the four screw holes around its perimeter. Fit the bracket over the drive, and then tilt the front of the drive up so that the bracket drops down into place. To ensure proper installation, all screw holes should be aligned and the tabs on the front of the bracket should be flush with the front of the drive (see Figure 7-7).

7-4 Dell OptiPlex GXa Mini Tower Systems Reference and Installation Guide

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Dell Mini Tower System manual Unpack the drive and prepare it for installation, Attach the bracket to the new drive