Dell Alienware M17x R3 (Early 2011) - Manual (Page 92)

92 Optical Drive
11 Lift the release latch on the connector on the system board and disconnect
the optical-drive cable from the connector on the system board.
12 Remove the two screws that secure the optical-drive assembly to the
computer base.
13 Lift the optical-drive assembly off the computer base.
14 Remove the five screws that secure the optical-drive bracket to the optical
drive.
1 optical-drive cable 2 screws (2)
3 optical drive
1
3
2