Dell Alienware M14x R2 (Early 2012) - Manual (Page 21)

4 Replace the screws that secure the optical-drive cable connector to the
optical drive.
5 Adhere the optical-drive cable to the optical-drive bracket.
6 Place the optical drive in the optical-drive bay.
7 Tighten the captive screws that secure the optical drive to the computer
base.
8 Slide the optical-drive cable into the connector on the system board, and
press down on the connector latch to secure the cable.
Postrequisites
1 Replace the battery. See "Replacing the Battery" on page 18.
2 Replace the base cover. See "Removing the Base Cover" on page 15.
3 Follow the instructions in "After Working Inside Your Computer" on page 13.
Optical Drive 23