Apple PC Compatibility Card - Manual (Page 18)

18 Chapter 1
17 Plug the other end of the audio cable into the connector next to the CD In connector on
the PC Compatibility Card.
The Standard Sound Out connector, labeled “STD_SND_OUT,” is right next
to the CD In connector, in the upper-left corner of the card.
Route the cable so it lies behind the video DIMM and away from the heat sink.
Route the cable
behind the video
DIMM. The cable
should not touch the heat sink.
Connector labeled “STD_SND_OUT” on the PC Compatibility Card
Do not plug any cable into this connector for this computer model.