User`s manual

Installation
11
CPU Fan and System Fan: CPUFAN1, SYSFAN and FAN3
The CPUFAN1 (CPU fan), SYSFAN2 (system fan) and FAN3 runs on +12V
and maintain system cooling. When connecting the wire to the connectors,
always be aware that the red wire is the Positive and should be connected to
the +12V. The black wire is Ground and should always be connected to
GND.
CPUFAN_PWM is a switch that is used by high-quality fans to monitor the
system temperature and will automatically adjust according to the
environment.
CPUFAN1
Pin Signal
1 GND
2 +12V
3 FANIO1
4 CPUFAN_PWM
SYSFAN2
Pin Signal
1 NC
2 +12V
3 GND
FAN3
Pin Signal
1 NC
2 +12V
3 GND
WARNING: SYSFAN2 and FAN3 rating less than 500mA of current
is highly recommended for system stability.
CPU
FAN1
1
SYSFAN2
1
FAN3
1