Apple PC Compatibility Card - Manual (Page 304)

Sound
16-bit Sound Blaster sound system allows
m PC sound played through Macintosh speaker or headphones
m CD-ROM sound recording capability
m enhanced FM-synthesized sound-out capabilities
m 8- and 16-bit digital sound
Sound Blaster microphone and line input are not supported.
Keyboard
Macintosh ADB keyboard and mouse emulate PC AT-compatible keyboard
and PS/2-compatible mouse.
Joystick
Standard PC-style joysticks supported through DB-15 connector included on
the card (PC applications only).
MIDI
MIDI devices supported through a Sound Blaster–compatible joystick-to-
MIDI adapter cable (available separately).
Serial ports
Two PC compatible serial interfaces that can be routed, under software
control, either to a text file or through the two Macintosh RS-422 serial ports
(RS-422 ports do not support all RS-232 signals).
Parallel port
Macintosh printer port can emulate PC XT/AT-compatible parallel port
(LPT1).
304 Appendix E