Apple PC Compatibility Card 7-inch card - Manual (Page 77)

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.”
Connecting a PC game controller
Some models of the PC Compatibility Card come with a game controller port.
To connect a PC game controller, such as a joystick, remove the plastic cover
on the game controller port; then plug your game controller into the port.
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