Dell OptiPlex Gxi - Manual (Page 112)

Drive Hardware (Low-Profile Chassis): OptiPlex GXi
Drive Hardware | 3.5-Inch Diskette-Drive Assembly Removal | 5.25-Inch Drive Assembly Removal | Hard-Disk Drive Assembly Removal
Drive Hardware
3.5-Inch Diskette-Drive Assembly Removal
1. Disconnect the DC power cable and the interface cable from the back of the diskette drive.
2. Press in the two 3.5-inch diskette-drive assembly latches to release the assembly. Rotate the left side of the assembly up, and lift the assembly out of the chassis.
3. Remove the two drive-mounting screws from the left side of the drive, and remove the drive from the bracket.
When you replace the 3.5-inch diskette drive, be sure the mounting holes on the right side of the drive engage the two hooks on the bracket.
5.25-Inch Drive Assembly Removal