Apple Setting Up Your Power Macintosh G4 (PCI & AGP) - Manual (Page 39)

Working Inside the Computer 39
Installing an Internal Storage Device
1 Unplug the power cord bundle from the main logic board and the ribbon cable from the
drive.
If you’re working with SCSI drives, disconnect the power cord bundle from the main logic
board.
Unlock the power cord bundle
plug by pressing the small catch
located on the side of the plug. Unplug the power cord bundle
from the main logic board.
Unplug the ribbon cable
from the hard disk drive.
(Side view)