Apple Macintosh Performa 6300CD Series - Manual (Page 109)

Opening the computer
1 Shut down your computer by choosing Shut Down from the Special menu.
You can also press the Power key on the keyboard.
2 Unplug all the cables except the power cord from your computer.
Leaving the power cord plugged in helps protect the computer from
electrostatic discharge.
IMPORTANT To avoid generating static electricity that may damage
components, do not walk around the room until you have completed the
installation of the expansion card and closed the computer. Additionally, move
the logic board as little as possible while it is outside the computer case.
3 Place your thumbs on the two tabs at the top of the computer’s back panel, and press
down.
4 Pulling gently, swing the panel down, and slip it out.
Remove the back panel.
99 Installing an Expansion Card