MSI MPG B550 User Manual

22
Overview of Components
BAT1
24
131
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
5
4 1
8
CPU_PWR1
1 Ground 5 +12V
2 Ground 6 +12V
3 Ground 7 +12V
4 Ground 8 +12V
⚠
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_PWR1~2, ATX_PWR1: Power Connectors
These connectors allow you to connect an ATX power supply.
3
2 1
4
CPU_PWR2
1 Ground 3 +12V
2 Ground 4 +12V

MSI MPG B550 Specifications

General

Form Factor	ATX
Chipset	AMD B550
Max Memory	128GB
Memory Type	DDR4
M.2 Slots	2
SATA Ports	6
Socket	AM4
Memory Slots	4
Memory Speed	4400MHz (OC)
Network	2.5G LAN
Wi-Fi	Wi-Fi 6 (802.11ax)
Bluetooth	Bluetooth 5.1
RGB Support	Mystic Light