Fan Headers - Biostar A785G3 Setup Manual

2.2 FAN H
EADERS
These fan headers support cooling-fans built in the computer. The fan
cable and connector may be different according to the fan manufacturer.
Connect the fan cable to the connector while matching the black wire to
pin#1.
CPU_FAN1: CPU Fan Header
SYS_FAN1: System Fan Header
Note:
CPU_FAN1 supports 4-pin head connector. SYS_FAN1 supports 3-pin head connector.
When connecting with wires onto connectors, please note that the red wire is the positive
and should be connected to pin#2, and the black wire is Ground and should be
connected to GND.
A785G3/A780L3/A780L3G
1 4
Pin
1
2
3
FAN RPM rate
sense
4
Pin
1
2
3
1 3
Assignment
Ground
+12V
Smart Fan
Control (By Fan)
Assignment
Ground
+12V
FAN RPM rate
sense
7