Dell OptiPlex GX150 - Manual (Page 131)

5. Remove the diskette drive from its sled by pulling the sled tab out while pushing the drive up, and then sliding the drive out of the sled.
Removing the Diskette Drive —Small Form-Factor Computer
1 Diskette-drive cable
2 Lever
1 Sled tab
2 Sled
Removing the Diskette Drive With the Combination Data Cable
1. Open the computer cover .
2. Disconnect the combination data cable from the interface (IDE2) and diskette drive data connectors on the system board.
Removing the Cables on the Diskette Drive —Small-Form Factor System