Cpu_Fan1, Sys_Fan1: Fan Connectors; Ez Debug Led - MSI H310M PRO-M2 PLUS Mode D'emploi

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. 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.
Default PWM Mode fan connectors
Default DC Mode fan connectors
Pin definition of fan connectors
PWM Mode pin definition
1 Ground
3 Sense
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

EZ Debug LED

These LEDs indicate the status of the motherboard.
CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU is not detected or fail.
BOOT - indicates booting device is not detected or fail.
14
Rear I/O Panel
2 +12V
Speed Control
4
Signal
1
CPU_FAN1
1
SYS_FAN1
DC Mode pin definition
1 Ground
3 Sense
Voltage
2
Control
4 NC