Dell Dimension 2200 - Manual (Page 11)

7. Rotate the insert toward you, and remove it from the front panel.
If you permanently remove a drive from the drive cage, replace the front-panel insert by inserting its two tabs into the slot in the front panel and rotating the
insert forward until it snaps into place.
Upper 3.5-Inch Drive
1. Shut down the computer .
2. Turn off any attached devices and disconnect them from their electrical outlets.
3. Disconnect the computer power cable from the wall outlet, and then press the power button to ground the system board.
4. Remove the computer cover .
5. Remove the front panel .
6. Rotate the power supply away from the system board.
7. Remove the metal drive bay plate covering the bay.
Using a screwdriver, pop out the metal plate from the left or right side of the computer.
8. Remove the extra rails from the front of the computer frame.
9. Install the rail marked "L" on the left side of the drive and the rail marked "R" on the right side of the drive.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in " Safety Instructions ."
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.