Apple Video System - Manual (Page 23)

18 Skip the steps that follow (“Installing the Card in Style B”),
and the next section, “Installing the Card in a Modular
Computer,” and go on to the section titled “Installing
the Software.”
Installing the card in Style B
1 Make sure you save any open documents and quit any open
applications. Then turn off the computer.
m Choose Shut Down from the Special menu, or press the
Power key on the keyboard.
m Then press the power switch at the back of the computer.
Press the side of the switch marked with the j symbol.
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 damage.
Important To avoid generating static electricity that may
damage components, do not walk around the room until
you have finished installing the card and closed the
computer. Additionally, move the logic board as little as
possible while it is outside the computer.
17 Installing the Card and Software and Connecting Video Equipment