Dell OptiPlex GX1p - Manual (Page 10)

While pressing the tab release, tilt the bezel away from the chassis, disengage the two retaining hooks at the bottom of the bezel, and carefully pull
the bezel away from the chassis.
To replace the bezel, fit the two retaining hooks on the bezel into their corresponding slots at the bottom of the chassis. Then rotate the top of the
bezel toward the chassis until the top tabs snap into their corresponding slots on the bezel.
Removing and Replacing Front-Panel Inserts
Empty drive bays contain a front-panel insert to protect the inside of the computer from dust particles and also to ensure proper airflow within the
computer. Before you install a drive in an empty drive bay, you must first remove the front-panel insert.
To remove the insert covering a 5.25-inch bay, follow these steps:
1. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources.
2. Remove the computer cover as instructed in " Removing the Computer Cover ."
3. Remove the front bezel as instructed in " Removing and Replacing the Front Bezel ."
4. With your thumbs, press in each end of the insert until it snaps free of the bezel (see Figure 3).
Figure 3. Removing the Front-Panel Insert for a 5.25-Inch Bay
To replace a front-panel insert for a 5.25-inch bay, work from inside the bezel. Position the insert behind the bay opening, insert the two ring-tabs
(one on each end of the insert) over the posts on the inside of the opening, and firmly press both ends of the insert into place (see Figure 3).
Connecting Drives
When installing a drive, you connect two cables —a DC power cable and an interface cable—to the back of the drive. Your drive's power input
connector (to which you connect the DC power cable) resembles the connector shown in Figure 4.
Figure 4. DC Power Cable Connector
CAUTION: Before you remove the computer cover, see " Safety First — For You and Your Computer ."