MSI B550-A PRO AMD Motherboard

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.

USER FRIENDLY DESIGN
MSI motherboards feature tons of convenient and smart design for DIY users, countless system tuning and troubleshooting tools are at your disposal to push your system to new heights and satisfy even the most demanding tweaker. Makes it so easy to install your own motherboard without any issue.

THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE
With more cores’ processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink with 7W/mK thermal pad ensures even high-end processors to run in full speed with MSI motherboards.

CONNECTIVITY
The most important thing of DIY is expandability. MSI PRO series motherboards feature plenty possibility for prosumers’ need. Stable LAN, faster storage and USB transfer speed and other expandable connectors are ready to enlarge your flexibility.

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.

EXPERIENCE MORE
MSI PRO series motherboards are designed to satisfy any professional workflow. Elevate your listening pleasure and enjoy extreme sound quality. Moreover, with years of experience in creating performance enhancing tools that are easy to use, only the highest quality applications are at your disposal. The extensive features let you fine-tune your system to deliver reliable maximum performance.

PCB WITH 2OZ THICKENED COPPER
An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking.

Technical Details

Brand : MSI
Model : B550-A PRO

CPU
Supports AM4 socket 3rd Gen AMD Ryzen™ processors, and future AMD Ryzen™ processors with BIOS update.

CHIPSET
AMD B550 Chipset

MEMORY
4x DDR4 memory slots, support up to 128GB 1
Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC
Supports DDR4 2667/ 2800 /2933 /3000 /3066 /3200 /3466 /3600/ 3733 /3866 /4000 /4133 /4266 /4400+ MHz by A-XMP OC MODE
1DPC 1R Max speed 4800 MHz
1DPC 2R max speed 3866 MHZ
2DPC 1R max speed 4000 MHZ
2DPC 2R max speed 3600 MHZ
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory

EXPANSION SLOT
1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) 1
1x PCIe 3.0 x16 slot (PCI_E3), supports x4 speed 2
2x PCIe 3.0 x1 slots

MULTI-GPU
Supports 2-Way AMD CrossFire™ Technology

ONBOARD GRAPHICS
1x HDMI port, supports a maximum resolution of 4096x2160 @24Hz 1
1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz 1
Maximum shared memory of 2048 MB

STORAGE
AMD B550 Chipset
6x SATA 6Gb/s ports
2x M.2 slots (Key M)
M2_1 slot (from AMD Processor)
Supports PCIe 4.0/ 3.0 x4 1
Supports SATA 6Gb/s
Supports 2242/ 2260/ 2280/ 22110 storage devices
M2_2 slot (from AMD B550 chipset)
Supports PCIe 3.0x4
Supports 2242/ 2260/ 2280 storage devices

RAID
Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices
Supports RAID 0 and RAID 1 for M.2 NVMe storage devices

USB
AMD B550 Chipset
3x USB 3.2 Gen 1 5Gbps ports (1 Type-C internal connector, and 2 ports are available through the internal USB 3.2 Gen 1 5Gbps connector)
8x USB 2.0 ports (4 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors)

AMD Processor
2x USB 3.2 Gen 2 10Gbps ports (1 Type-C port and 1 Type-A port on the back panel)
2x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel

AUDIO
Realtek® ALC892 Codec
7.1-Channel High Definition Audio

LAN
1x Realtek® 8111H Gigabit LAN controller

INTERNAL CONNECTORS
1x 24-pin ATX main power connector
1x 8-pin ATX 12V power connector
6x SATA 6Gb/s connectors
2x M.2 slots (M-Key)
1x USB 3.2 Gen 1 5Gbps Type-C port
1x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
2x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
1x 4-pin CPU fan connector
1x 4-pin water-pump fan connector
6x 4-pin system fan connectors
1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
1x 4-pin RGB LED connector
2x 3-pin RAINBOW LED connectors
1xTPM module connector
1x Clear CMOS jumper

BACK PANEL PORTS
Keyboard / Mouse
DisplayPort
LAN
HD Audio Connectors
Flash BIOS Button
USB 2.0
HDMI
USB 2.0
USB 3.2 Gen 1 5Gbps Type-A
USB 3.2 Gen 2 10Gbps Type-A+C

DIMENSIONS
ATX Form Factor
12 in. x 9.6 in. (30.5 cm x 24.4 cm)