Fan Headers - Biostar A770 A2+ 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.
CPUFAN: CPU Fan Heade r
SYSFAN: System Fan He aders
Note:
The CPUFAN and SYSFAN support 4- pin and 3-pin head connec tor. When connecting
with wires onto c onnectors, please note that the red wire is the positi ve and s houl d be
connected to pi n#2, and the bl ac k wire is Ground and s hould be c onnected to GND.
A770 A2+/A740X A2+
1 4
Pin
Pin
1
3
Assignment
1 Ground
2 +12V
3
FAN RPM rate
sense
4 Smart Fan
Control (By Fan)
Assignment
1 Ground
2 +12V
3
FAN RPM rate
sense
7