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CPU_FAN1, PUMP_FAN1, SYS_FAN1~2: Fan Connectors
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.
However, you can follow the instruction below to adjust the fan connector to PWM or
DC Mode manually.
CPU_FAN1
SYS_FAN2
SYS_FAN1
Switching fan mode and adjusting fan speed
You can switch between PWM mode and DC mode and adjust fan speed in BIOS >
HARDWARE MONITOR.
Select PWM mode or DC mode
⚠
Important
Make sure fans are working properly after switching the PWM/ DC mode.
Pin definition of fan connectors
1
PWM Mode pin definition
1
Ground
2
3
Sense
4
PUMP_FAN1
Connector
CPU_FAN1
PUMP_FAN1
SYS_FAN1~2
There are gradient points of the fan speed that allow you to adjust
fan speed in relation to CPU temperature.
+12V
Speed Control Signal
Default
fan mode
current
PWM mode
PWM mode
DC mode
1
DC Mode pin definition
1
Ground
2
3
Sense
4
Overview of Components
Max.
Max.
power
2A
24W
3A
36W
1A
12W
Voltage Control
NC
27
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