Dell XPS 15 (L501X, Late 2010) - Manual (Page 41)

Hard Drive 41
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).
Replacing the Hard Drive
1 Follow the instructions in "Before You Begin" on page 9.
2 Remove the new hard drive from its packaging.
Save the original packaging for storing or shipping the hard drive.
3 Slide the hard drive into the hard-drive bracket.
4 Replace the four screws that secure the hard-drive bracket to the hard
drive.
5 Place the hard-drive assembly in the hard-drive bay.
6 Slide the hard-drive assembly to connect it to the system board connector.
1 screws (4) 2 hard-drive bracket
1
2