HP ProDesk 400 G1 Maintenance And Service Manual page 74

4.
If you are installing an optical drive, install one black M3 metric mounting screw in the front upper
screw hole on the right side of the drive.
NOTE:
bezel. Refer to
replacing an optical drive, transfer the M3 mounting screw from the old drive to the new one.
CAUTION:
internal components of the drive.
5. Slide the drive into the drive bay (1) and install the two M3 mounting screws in the side of the
drive (2) to secure it in place.
64 Chapter 5 Removal and replacement procedures: Microtower
HP has supplied three extra M3 mounting screws on the front of the chassis behind the
Drives on page 59
Use only 5-mm long screws as mounting screws. Longer screws can damage the
for an illustration of the extra mounting screws location. When