HP Compaq 325 Maintenance And Service Manual page 65

For a 39.6-cm (15.6-in) computer using a 9.5mm thick hard drive, attach 2 pieces of 15×5×3mm
rubber from spares kit 652169-001 to the hard drive.
For a 39.6-cm (15.6-in) computer using a 7.0mm thick hard drive, attach 2 pieces of 12×5.5×7mm
rubber from spares kit 652169-001 to the hard drive.
For a 35.6-cm (14-in) or 33.8-cm (13.3-in) computer, attach 1 piece of the 90× 8×0.5 mm rubber
bumper from spares kit 652168-001 to the outside of the hard drive bracket.
Component replacement procedures
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