28
Fan connectors can be classified as PWM (Pulse Width Modulation) Mode or DC Mode.
PWM Mode fan connectors provide constant 12V output and adjust fan speed with
speed control signal. DC Mode fan connectors control fan speed by changing voltage.
You can follow the instruction below to adjust the fan connector to PWM or DC Mode.
Pin definition of fan connectors
Default
fan mode
Max.
current
Max.
CPU_FAN1 Auto mode 3A 36W
PUMP_FAN1 PWM mode 3A 36W
SYS_FAN1~6 DC mode 2A 24W
PUMP_FAN1
SYS_FAN1
SYS_FAN2
SYS_FAN3
SYS_FAN4SYS_FAN5
CPU_FAN1
SYS_FAN6
Important
Make sure fans are working properly after switching the PWM/ DC mode.
You can switch between PWM mode and DC mode and adjust fan speed in
.
Select PWM mode or mode
There are gradient points of the fan speed that allow you to adjust
fan speed in relation to CPU temperature.
1
PWM Mode pin definition
1 Ground 2 +12V
3 Sense 4 Speed Control Signal
1
1 Ground 2 Voltage Control
3 Sense 4 NC