Dell OptiPlex G1 - Manual (Page 67)

Drive Hardware Removal (Midsize Chassis): Dell ™ OptiPlex ™ G1 Systems
Drive Hardware | 3.5-Inch Diskette Drive Removal | 5.25-Inch Drive Assembly Removal | Hard-Disk Drive Bracket Removal | Hard-Disk Drive Assembly Removal
Drive Hardware
3.5-Inch Diskette Drive Removal
To remove the 3.5-inch diskette drive, follow these steps:
1. Disconnect the DC power cable and the interface cable from the back of the 3.5-inch diskette drive.
2. Remove the bracket-mounting screw.
3. Rotate the left side of the 3.5-inch diskette drive up, and lift the drive out of the chassis.
4. 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 that the two hooks on the right side of the bracket engage the mounting holes in the side of the 3.5-inch diskette
drive.
5.25-Inch Drive Assembly Removal