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CPU_FAN1, PUMP_FAN1, SYS_FAN1~6: 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.
The auto mode fan connectors can automatically detect PWM and DC mode. However,
you can follow the instruction below to adjust the fan connector to PWM or DC Mode
manually.
SYS_FAN3
SYS_FAN6
SYS_FAN5
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
1
Ground
3
Sense
CPU_FAN1
PUMP_FAN1
SYS_FAN1
Connector
SYS_FAN2
SYS_FAN4
There are gradient points of the fan speed that allow you to adjust
fan speed in relation to CPU temperature.
PWM Mode pin definition
2
+12V
4
Speed Control Signal
Default fan
mode
CPU_FAN1
Auto mode
PUMP_FAN1
PWM mode
SYS_FAN1~6
DC mode
1
3
Max.
current
2A
3A
2A
1
DC Mode pin definition
Ground
2
Voltage Control
Sense
4
Overview of Components
Max.
power
24W
36W
24W
NC
43
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