Ricoh Aficio SP 8100DN Hardware Manual page 35

Installing Options
J
Carefully insert the hard disk drive into the controller board as shown.
There is a lip cut into the center of the front end of the hard disk drive's casing.
Hook this part over the flange (curled part) in the slot (1) on the controller
board, and then align (2) and (3) with the screw holes in the rear edge of the
controller board.
2
K
Fasten the screws clockwise as shown by using the provided screwdriver,
to secure the hard disk drive.
L
Connect the power cable to the socket on the controller board.
24
AQV517S
AQV730S
AQV520S