Atx_Pwr1, Cpu_Pwr1: Power Connectors; Cpu_Fan1, Sys_Fan1: Pwm Fan Connectors - MSI A320M-A PRO Bedienungsanleitung

ATX_PWR1, CPU_PWR1: Power Connectors

These connectors allow you to connect an ATX power supply.
12 24
ATX_PWR1
1 13
4 3
CPU_PWR1
2 1
⚠
Important
Make sure that all the power cables are securely connected to a proper ATX power
supply to ensure stable operation of the motherboard.

CPU_FAN1, SYS_FAN1: PWM Fan Connectors

PWM Mode fan connectors provide constant 12V output and adjust fan speed with
speed control signal. 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 adjust fan speed in BIOS > Advanced > Hardware Monitor.
1
CPU_FAN1/ SYS_FAN1
1 +3.3V
2 +3.3V
3 Ground
4 +5V
5 Ground
6 +5V
7 Ground
8 PWR OK
9 5VSB
10 +12V
11 +12V
12 +3.3V
1 Ground
2 Ground
PWM Mode pin definition
1 Ground
3 Sense
13 +3.3V
14 -12V
15 Ground
16 PS-ON#
17 Ground
18 Ground
19 Ground
20 Res
21 +5V
22 +5V
23 +5V
24 Ground
3 +12V
4 +12V
2 +12V
4 Speed Control Signal
Rear I/O Panel
11