Dell OptiPlex 9010 (Mid 2012) - Manual (Page 19)

6. Repeat steps 4 to 5 to remove the second optical drive (if available).
Installing the Optical Drive
1. Push the optical drive from the front toward the back of the computer till it is secured by the optical-drive latch.
2. Connect the data cable and power cable to the back of the optical drive.
3. Install:
a. front bezel
b. cover
4. Follow the procedures in After Working Inside Your Computer .
Removing the Speaker
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover.
3. Disconnect and release the speaker cable from the system board.
19