Dell PowerEdge 6850 System Installation Manual page 76

4. Remove the optical drive or optical drive filler plate from the carrier:
a. Loosen the thumbscrew on the latch securing the optical drive or filler plate. See Figure 7-4.
b. Remove the latch.
c. Lift the optical drive or optical drive filler plate from the carrier.
Figure 7-4. Installing a Diskette Drive in the Drive Carrier
5. To remove the diskette drive filler plate, pull the retention spring slightly away from the filler plate, then lift the filler plate from the carrier.
6. Deflect the retention spring slightly, then insert the diskette drive into the carrier.