PRO series helps users work smarter by delivering an efficient and productive experience. Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only optimized professional workflows but also less troubleshooting and longevity. FULLY CONTROLLABLE IN BIOS AND SOFTWARE MSI motherboards let you manage speeds and temperatures for all your system and CPU fans. Total Fan Control allows you check your primary system characteristics in a simplified graphical interface. You can also set up to 4 temperature targets for CPU and motherboard, which will adjust the fan speeds automatically. FAST AND FUTURE-READY STORAGE MSI PRO series motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work easier. EXTREME STABILITY & COMPATIBILITY TESTING MSI conducts thorough memory testing with the most popular memory brands under extreme conditions to ensure your system runs stable no matter what. Our memory partners include brands like Corsair, Crucial, Kingston, G.Skill and many more to optimize memory modules and configurations.

Processor
Processor manufacturer	AMD
Processor socket	Socket AM4
Compatible processor series	3rd Generation AMD Ryzen™ 3, 3rd Generation AMD Ryzen 5, 3rd Generation AMD Ryzen™ 7, 3rd Generation AMD Ryzen™ 9
Memory
Supported memory types	DDR4-SDRAM
Number of memory slots	4
Maximum internal memory	125 GB
Memory slots type	DIMM
Memory channels	Dual-channel
Non-ECC	Y
Supported memory clock speeds	1866,2133,2400,2667,2800,2933,3000,3066,3200,3466,3600,3733,3866,4000,4133,4266,4400 MHz
Weight & dimensions
Width	244 mm
Depth	244 mm
Network
Wi-Fi	N
Ethernet LAN	Y
Ethernet interface type	Gigabit Ethernet
LAN controller	Realtek RTL8111H
Internal I/O
USB 2.0 connectors	2
USB 3.2 Gen 1 (3.1 Gen 1) connectors	1
Number of SATA III connectors	6
Front panel audio connector	Y
Front panel connector	Y
ATX Power connector (24-pin)	Y
Chassis intrusion connector	Y
Peripheral (Molex) power connectors (4-pin)	1
TPM connector	Y
12V power connector	Y
Rear panel I/O ports
USB 2.0 ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4
Ethernet LAN (RJ-45) ports	1
VGA (D-Sub) ports quantity	1
HDMI ports quantity	1
DVI-D ports quantity	1
Storage controllers
Supported storage drive interfaces	M.2, SATA III
Supported storage drive types	HDD & SSD
RAID levels	0, 1, 10
Expansion slots
PCI Express x1 (Gen 3.x) slots	1
PCI Express x16 (Gen 4.x) slots	1
Number of M.2 (M) slots	1
BIOS
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
Clear CMOS jumper	Y
Graphics
Parallel processing technology support	Not supported
Maximum resolution	4096 x 2160 pixels
Features
Component for	PC
Motherboard form factor	micro ATX
Motherboard chipset family	AMD
Motherboard chipset	AMD B550
Audio output channels	7.1 channels
Audio chip	Realtek ALC897
Logistics data
Harmonized System (HS) code	84733020