MSI B450M-A PRO MAX - CPU_FAN1, SYS_FAN1: Fan Connectors

15
 

PWM Mode fan connectors provide constant 12V output and adjust fan speed with
speed control signal. When you plug a 3-pin (Non-PWM) fan to a fan connector in
PWM mode, the fan speed will always maintain at 100%, which might create a lot of
noise.

You can adjust fan speed in .
There are gradient points of the fan speed that allow you to
adjust fan speed in relation to CPU temperature.


1 Ground 2 +12V
3 Sense 4 Speed Control Signal
1
SYS_FAN1
1
CPU_FAN1