Apple ColorLaserWriter 12/600PS - Manual (Page 167)

7 Remove the three screws from the controller board and discard them.
8 Attach the hard drive cable to the controller board.
9 Secure the brackets on the hard disk to the controller board with the three screws that
came in the package with the hard disk.
10 Remove and discard the grounding wrist strap.
You’ve now installed the hard disk. You need only replace the controller board
to complete the installation.
11 Grasp the controller board by its metal frame and slide it back into the printer.
Attach the cable here.
142 Chapter 5