Apple Power Macintosh 7300 series - PC Compatibility Card - Manual (Page 9)

Connecting a pointing device
If you have a standard ADB (Apple Desktop Bus) one-button mouse or other
pointing device, you can simulate the behavior of a two-button PC mouse
using keys on your keyboard. For more information, see the section “Using a
Pointing Device” in Chapter 4.
You can also use an ADB multibutton mouse or other pointing device and
configure it to work as a PC mouse. To use a multibutton pointing device in
the PC environment, you need to install the appropriate software. See the
manual that came with your computer and pointing device for more
information.
You can connect a pointing device to any available ADB port (marked with
V)
on your Macintosh computer.
Pointing devices designed specifically for a PC are not recommended for use
with your Macintosh computer.
Connecting a MIDI device
You can connect a MIDI (musical instrument digital interface) device to the
game controller port that comes on some models of the PC Compatibility
Card. To connect a MIDI device, you need a Sound Blaster–compatible
MIDI-to-joystick adapter (available from your computer dealer). For
instructions on connecting devices to the joystick port, see the next section,
“Connecting a PC Game Controller.”
9 Connecting Monitors and Other Equipment