SOYO SY-P4VDA User Manual page 29

Hardware Installation
(2) Chassis Cooling Fan (CHAFAN1,CHAFAN2)
Some chassis also feature a cooling fan. This Motherboard features a
CHAFAN connector to provide 12V power to the chassis fan. Connect the
cable from the chassis fan to the CHAFAN 3-pin connector. Install
according to the following pin assignment:
Note: CPUFAN must be installed for this Motherboard, CHAFAN is
optional.
Chassis Cooling Fan
(CHAFAN1,CHAFAN2)
CHAFAN Pin Assignment
CHAFAN1
3
2
1
CHAFAN2
GND
12V
None
SENSOR
12V
GND
1
2
3
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SY-P4VDA