HP DL120 - Manual (Page 45)

Removal and replacement procedures 45
7. Reinstall the ODD backplane board.
a. Connect the backplane board to the new ODD module (1).
b. Secure the backplane board to the ODD carrier with two screws removed (2).
8. Install the new ODD assembly in the chassis.
a. Slide the ODD assembly into the chassis (1).
b. Secure the ODD carrier with two screws (2).
c. Connect the data and power cables to the new optical disc drive (3).
9. Perform the post-installation procedure.