Installing a 5.25-inch drive
1. Prepare the computer for disassembly (Preparation for disassembly on page 17)
2. Remove the access panel (Access panel on page 18)
3. Remove the front bezel. If you are installing a drive in a bay covered by a bezel blank, remove the bezel 
blank. See Removing bezel blanks on page 22 for more information.
4. 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.
Drives 33