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Cpu_fan1, pump_fan1, sys_fan1~5: fan connectors, Important – MSI MPG Z790 CARBON WIFI LGA 1700 ATX Motherboard User Manual

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CPU_FAN1, PUMP_FAN1, SYS_FAN1~5: 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.
You can control fans in

BIOS> HARDWARE MONITOR

panel. It allows you to set DC

or PWM to your fan type. Check the

Smart Fan Mode

, the fan speed will change

according to the CPU or system temperature. Uncheck the

Smart Fan Mode

, the fan

will spin at maximum speed.

Important

Make sure fans are working properly after switching the PWM/ DC mode.

CPU_FAN1

SYS_FAN2

SYS_FAN1

SYS_FAN3

PUMP_FAN1

SYS_FAN5

SYS_FAN4

1

PWM Mode pin definition

Pin

Signal Name

Pin

Signal Name

1

Ground

2

+12V

3

Sense

4

Speed Control Signal

DC Mode pin definition

Pin

Signal Name

Pin

Signal Name

1

Ground

2

Voltage Control

3

Sense

4

NC

Fan connector specifications

Connector

Default fan mode

Max. current

Max. power

CPU_FAN1

Auto mode

2A

24W

PUMP_FAN1

PWM mode

3A

36W

SYS_FAN1~5

DC mode

1A

12W

1