SOYO SY-6IBM User Manual page 24

Hardware Setup
4. CD Line-in (J4,J5)
This Motherboard provides two CD-Line in connectors. Please
connect the 4-pin audio cable from your CD-ROM drive to either
CDIN1 or CDIN2. (It fits in only one, depending on the cable that
came with your CD-ROM drive)
Please install according to the following pin assignment:
5. Other Display Cards
Insert other types of VGA cards into the PCI or ISA expansion slots
according to card specifications.
CD Line-in : J4,J5
Right
Left
GND
1 3
2
Right
GND
GND
1 2 3
21
GND
J4
4
Left
J5
4
SY-6IBM