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JAUD1: Front Audio Connector

This connector allows you to connect audio jacks on the front panel.

2 10

Pin Signal Name Pin Signal Name

1 MIC L 2 Ground

3 MIC R 4 NC

5 Head Phone R 6 MIC Detection

7 SENSE_SEND 8 No Pin

9 Head Phone L 10 Head Phone Detection

CPU_FAN1, SYS_FAN1: 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.

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 PWM mode 2A 24W

SYS_FAN1 DC mode 2A 24W

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Important

You can adjust fan speed in BIOS > HARDWARE MONITOR.

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MSI B660M BOMBER DDR4 Specifications

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