Apple PC Compatibility Card 12-inch card - Manual (Page 43)

29 Replace the cover on the computer.
Lower the cover all the way down onto the case, leaving a two-inch gap. Push
the cover back until it snaps into place.
Slide the top cover all the way back
until it snaps into place.
Set the top cover down so that there is about a two-inch
gap between the back of the top cover and the back of
the chassis.
(front of computer)
29 Installing the Card in a Power Macintosh 7200, 7500, or 7600