Dell Alienware M17x R4 (Early 2012) - Manual (Page 20)

20 | Removing the Hard Drive(s)
4 Remove the screws that secure the hard drive to the hard-drive bracket.
5 Lift the hard-drive off the hard-drive bracket.
6 Remove the interposer from the hard drive.
CAUTION: When the hard drive is not in the computer, store it in
protective antistatic packaging. See "Protecting Against
Electrostatic Discharge" in the safety instructions that shipped with
your computer.
1 interposer 2 screws (4)
3 hard drive 4 hard-drive bracket
1
2
4
2