Hardware Reference Guide

7. If you are installing an optical drive, install four M3 metric mounting screws (not provided) in the lower
holes on each side of the drive.
NOTE: When replacing an optical drive, transfer the four M3 metric mounting screws from the old drive
to the new one.
IMPORTANT: Use only 5 mm–long screws as mounting screws. Longer screws can damage the internal
components of the drive.
8. If you are installing a 5.25-inch drive in a vacant drive bay, you may need to remove the metal shield
covering the front of the bay. Insert a screwdriver into the slots on the front of the shield (1) and rock
the shield back and forth (2) to break it free from the chassis.
26 Chapter 2 Hardware upgrades