Apple PC Compatibility Card 12-inch card - Manual (Page 48)

Opening the computer
1 Shut down the computer.
Leave the computer plugged in to ground it and protect its components from
static electricity damage.
2 Loosen the large screws on the back panel.
If you have a Power Macintosh 8500, there are four screws, one at each
corner of the back panel. If you have a Power Macintosh 9500, there are six
screws (one at each corner and also two screws on the sides of the back
panel). Do not completely remove the screws or the back panel.
34 Chapter 2