MSI MPG B550 GAMING PLUS User Guide

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CPU_FAN1, PUMP_FAN1, SYS_FAN1~6: 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.
The auto mode fan connectors can automatically detect PWM and DC mode.
You can control fans in BIOS> HARDWARE MONITOR panel. It allows you to set DC
or PWM to your fan type. Check the Smart Fan Mode, the fan speed will change
according to the CPU or system temperature. Uncheck the Smart Fan Mode, the fan
will spin at maximum speed.
⚠
Important
Make sure fans are working properly after switching the PWM/ DC mode.
1
1
PWM Mode pin definition
Pin Signal Name Pin Signal Name
1 Ground 2 +12V
3 Sense 4 Speed Control Signal
DC Mode pin definition
Pin Signal Name Pin Signal Name
1 Ground 2 Voltage Control
3 Sense 4 NC
Fan connector specifications
Connector Default fan mode Max. current Max. power
CPU_FAN1 Auto mode 2A 24W
PUMP_FAN1 PWM mode 3A 36W
SYS_FAN1~6 DC mode 1A 12W
CPU_FAN1
SYS_FAN5 SYS_FAN4
SYS_FAN3
PUMP_FAN1
SYS_FAN1
SYS_FAN6
SYS_FAN2

MSI MPG B550 GAMING PLUS Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3 3rd Gen, AMD Ryzen 5 3rd Gen, AMD Ryzen 7 3rd Gen, AMD Ryzen 9 3rd Gen
Maximum number of SMP processors	1
S/PDIF out port	Yes
USB 2.0 ports quantity	4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
Wi-Fi	No
LAN controller	Realtek 8111H
Ethernet interface type	Gigabit Ethernet
Memory channels	Dual-channel
Memory slots type	DIMM
Supported memory types	DDR4-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	1866, 2133, 2400, 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400 MHz
Audio chip	Realtek ALC892
Component for	PC
Motherboard chipset	AMD B550
PC health monitoring	CPU, FAN, Temperature
Audio output channels	7.1 channels
Motherboard form factor	ATX
Number of mounting holes	9
RAID levels	0, 1, 10
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	SATA III
Maximum resolution	4096 x 2160 pixels
Maximum graphics card memory	16000 MB
Parallel processing technology support	2-Way CrossFireX
Number of SATA III connectors	6
BIOS type	UEFI AMI
Cables included	SATA
Harmonized System (HS) code	84733020
Weight	1000 g

Weight and Dimensions

Depth	244 mm
Width	305 mm
Height	65 mm