Fan Headers - Biostar A55MLV 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, SYS_FAN1 support 4-pin and 3-pin head connectors. 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.
1
4
1 3
A55MLV & A55MLC
Pin Assignment
1 Ground
2 +12V
3
FAN RPM rate
sense
4 Smart Fan
Control (By Fan)
Pin Assignment
1 Ground
2 +12V
3
FAN RPM
rate sense
7