Apple Macintosh Performa 6400 Series - Manual (Page 168)

Opening the computer
IMPORTANT To avoid generating static electricity (from your body) that may
damage components, do not walk around the room until you have completed
the installation of the DIMM or High Performance Module and closed the
computer. Additionally, move the logic board as little as possible while it is
outside the computer case.
1 Shut down your computer by choosing Shut Down from the Special menu.
You can also press the Power key (marked with a π) on the keyboard.
2 Unplug all the cables except the power cord from the computer (including the cable that
connects your keyboard to the computer).
Leaving the power cord plugged in helps protect the computer from
electrostatic discharge damage. (You’ll unplug the power cord later.)
3 With a screwdriver, remove the two screws shown here from the computer’s back panel.
Remove these
two screws.
Do not remove this screw.
Leave the power cord plugged
in for now. You’ll unplug it later.
168 Appendix B