Cpu_Fan1, Pump_Fan1, Sys_Fan1~3: Fan Connectors; Jaud1: Front Audio Connector - MSI X299M-A PRO Kurzanleitung

CPU_FAN1, PUMP_FAN1, SYS_FAN1~3: 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.
When you plug a 3-pin (Non-PWM) fan to a fan connector in PWM mode, the fan speed
will always maintain at 100%, which might create a lot of noise. You can follow the
instruction below to adjust the fan connector to PWM or DC Mode.
Important
You can switch between PWM mode and DC mode and adjust fan speed in BIOS >
y
HARDWARE MONITOR.
Make sure fans are working properly after switching the PWM/ DC mode.
y
Pin definition of fan connectors
PWM Mode pin definition
1 Ground 2
3 Sense 4

JAUD1: Front Audio Connector

This connector allows you to connect audio jacks on the front panel.
Default PWM Mode fan connectors
Default DC Mode fan connectors
+12V
Speed Control Signal
1
3
5 Head Phone R
7 SENSE_SEND
9 Head Phone L
1
1
CPU_FAN1 PUMP _FAN1
1
SYS_FAN1~3
DC Mode pin definition
1 Ground 2
3 Sense 4
2 10
1 9
MIC L 2
MIC R 4
6
8
10
Overview of Components
Voltage Control
NC
Ground
NC
MIC Detection
No Pin
Head Phone Detection
23