VB7009 User Manual
19
2.2.6.
CPU and System Fan Connectors
There are two fan connectors on board: one for the CPU and one for the chassis. The fan connector for
the CPU is labeled as “CPUFAN1” and the fan connector for the system is labeled as “SYSFAN1”. The fans
provide variable fan speeds controlled by the BIOS. The pinout of the fan connectors is shown below.
CPUFAN1
1
SYSFAN1
1
Figure 18: CPU and System fan connector diagram
CPU fan (CPUFAN1)
Pin
Signal
1
F_IO2 / Fan speed detection
2
F_PWM2 / Fan speed control
3
GND
System fan (SYSFAN1)
Pin
Signal
1
F_IO1 / Fan speed detection
2
F_PWM1 / Fan speed control
3
GND
Table 14: CPU and System fan connector pinout
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