Xerox DP N24 System Administrator Manual page 288

Hard Disk Drive
3 Loosen the thumbscrews and pull out the
controller board.
C-40 DP N24, N32 and N40 System Administrator Guide
4 Insert the four support posts as follows:
A Push the two long posts up through the
controller board from the bottom.
B Insert the two short posts into the holes
in the top of the controller board by
inserting them at a 45° angle and then
rocking them forward.
5 Set the controller board down on a flat surface.
Align the drive with the posts and connector,
then push down on the drive until all four
corners latch into place.