Dell Alienware M14x R2 (Early 2012) - Manual (Page 38)

Postrequisites
1 Replace the center-control cover.
See "Replacing the Center-Control Cover" on page 35.
2 Replace the battery. See "Replacing the Battery" on page 18.
3 Replace the base cover. See "Replacing the Base Cover" on page 16.
4 Follow the instructions in "After Working Inside Your Computer" on page13.
Keyboard 40