HP G4 Maintenance And Service Manual page 39

Item Component
320-GB, 7200-rpm
Hard Drive Hardware Kit, includes:
(2) Hard drive isolators (2)
(3) Hard drive shield
(4) Optical drive (includes bezel and bracket):
Blu-ray ROM DVD±R/RW Super Multi Double-Layer Drive
DVD±RW and CD-RW Super Multi Double-Layer Combo Drive
Optical drive bay space saver (not illustrated)
Spare part number
645089-001
639444-001
639449-001 and
659848-001
639448-001 and
659847-001
659618-001
Mass storage devices 31