Apple PC Compatibility Card - Manual (Page 67)

Connecting the audio cables
10 Unplug the audio ribbon cable from the computer’s CD-ROM drive and the Macintosh
logic board.
After unplugging this cable, carefully remove it from your computer (keep the
cable; you will need to reinstall it if you ever remove your PC Compatibility
Card). You will be replacing the ribbon cable with the audio cables that came
with your PC Compatibility Card.
Disconnect the CD cable
from the back of the
CD-ROM drive
and from the
computer’s main
logic board.
(back of computer)
67 Installing the Card in a Power Macintosh 8500 or 9500