Dell XPS 8500 (Early 2012) - Manual (Page 69)

Replacing the Optical Drive
1 Gently slide the optical drive into the optical-drive bay through the front
of the computer.
2 Align the screw holes on the optical drive with the screw holes on the
chassis.
3 Replace the screws that secure the optical drive to the chassis.
4 Connect the power and data cables to the optical drive.
Postrequisites
1 Replace the computer cover. See "Replacing the Computer Cover" on
page 25.
2 Replace the front bezel. See "Replacing the Front Bezel" on page 33.
Secondary Optical-Drive
Prerequisites
1 Remove the computer cover. See "Removing the Computer Cover" on
page 23.
2 Remove the front bezel. See "Removing the Front Bezel" on page 31.
Optical Drive(s) 69