SOYO SY-KT880 DRAGON 2 User Manual page 41

Hardware Installation
(2) Chassis Cooling Fan (CHAFAN1,CHAFAN2, CHAFAN3)
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 on this motherboard, while
CHAFAN is optional.
Classis Cooling Fan
(CHAFAN1, CHAFAN2, CHAFAN3)
CHAFAN Pin Assignment
CHAFAN1
1
GND
2
3
CHAFAN2
3
2
1
CHAFAN3
1
2
3
37
SY-KT880 DRAGON 2
12V
SENSOR
NC
12V
GND
GND
12V
NC