HP Compaq 325 Maintenance And Service Manual page 66

For a 35.6-cm (14-in) or 33.8-cm (13.3-in) computers using 7 mm thich hard drives, attach 2 pieces
of 13×9.5×3.1 mm rubber bumper from spares kit 652168-001 to the hard drive.
After the rubber or foam bumpers have been attached, reverse the removal procedure to install the
hard drive.
58 Chapter 4 Removal and replacement procedures