MSI B450M-A PRO MAX AM4 Micro-ATX Motherboard - Manual (Page 13)

13
Overview of Components Overview of Components
ATX_PWR1, CPU_PWR1: Power Connectors
These connectors allow you to connect an ATX power supply.
⚠
Important
Make sure that all the power cables are securely connected to a proper ATX power
supply to ensure stable operation of the motherboard.
24
13 1
12
ATX_PWR1
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3 Ground 15 Ground
4 +5V 16 PS-ON#
5 Ground 17 Ground
6 +5V 18 Ground
7 Ground 19 Ground
8 PWR OK 20 Res
9 5VSB 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 Ground
3
2 1
4
CPU_PWR1
1 Ground 3 +12V
2 Ground 4 +12V