Description
CPU
Supports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors
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
- Please refer www.msi.com for more information on compatible memory.
EXPANSION SLOT
MULTI-GPU
- Supports 2-Way AMD CrossFire™ Technology
ONBOARD GRAPHICS
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 3.0×4
- Supports 2242/ 2260/ 2280 storage devices
- M2_1 slot (from AMD Processor)
- The supported specification depends on installed processor.
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/ALC897 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)
MOUNTING
9 mounting holes
BOX CONTENT
- MSI® does not guarantee the risks or damages caused by changing the cover.
- These pictures are for reference only and may vary without notice.
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.
B550-A PRO
PREMIUM THERMAL SOLUTION
7W/mK Thermal Pad
Preminum 7W/mK thermal pad covered both MOSFET and chokes, provides better heat transfer to the heatsink.
Extended Heatsink
MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speed.
Pump Fan Support
Control watercooling pump speeds for best flow and noise control.
M.2 Shield Frozr
Strengthened built-in M.2 thermal solution. Keeps M.2 SSDs safe while preventing throttling, making them run faster.
B550-A PRO
HIGH-SPEED TRANSMISSION
Turbo USB
Featuring the TURBO USB 3.2 GEN 2 10Gbps, with reversible Type-C connector.
DDR4 Boost
The fully isolated DDR circuit with Interdigital Tabbed Routing to deliver pure data signals and improve signal reliability at high frequencies.
Lightning Gen 4 Solution
The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed.
B550-A PRO
EXCLUSIVE FEATURE
Flash BIOS Button
Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.
Core Boost Technology
Combining premium layout design, that is ready for unleashing the maximum performance.
2oz Thickened Copper PCB
An enhanced PCB design improves heat dissipation and performance reliability.
Digital PWM
Highest quality component digital power IC makes sure your system runs smoothly under the most extreme conditions.
PCI-E Steel Armor
Protecting VGA cards against bending and EMI for better performance, stability and strength.
B550-A PRO
PREMIUM THERMAL SOLUTION
7W/mK Thermal Pad
Preminum 7W/mK thermal pad covered both MOSFET and chokes, provides better heat transfer to the heatsink.
Extended Heatsink
MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speed.
Pump Fan Support
Control watercooling pump speeds for best flow and noise control.
M.2 Shield Frozr
Strengthened built-in M.2 thermal solution. Keeps M.2 SSDs safe while preventing throttling, making them run faster.
B550-A PRO
HIGH-SPEED TRANSMISSION
Turbo USB
Featuring the TURBO USB 3.2 GEN 2 10Gbps, with reversible Type-C connector.
DDR4 Boost
The fully isolated DDR circuit with Interdigital Tabbed Routing to deliver pure data signals and improve signal reliability at high frequencies.
Lightning Gen 4 Solution
The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed.
B550-A PRO
EXCLUSIVE FEATURE
Flash BIOS Button
Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.
Core Boost Technology
Combining premium layout design, that is ready for unleashing the maximum performance.
2oz Thickened Copper PCB
An enhanced PCB design improves heat dissipation and performance reliability.
Digital PWM
Highest quality component digital power IC makes sure your system runs smoothly under the most extreme conditions.
PCI-E Steel Armor
Protecting VGA cards against bending and EMI for better performance, stability and strength.
B550-A PRO
PREMIUM THERMAL SOLUTION
7W/mK Thermal Pad
Preminum 7W/mK thermal pad covered both MOSFET and chokes, provides better heat transfer to the heatsink.
Extended Heatsink
MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speed.
Pump Fan Support
Control watercooling pump speeds for best flow and noise control.
M.2 Shield Frozr
Strengthened built-in M.2 thermal solution. Keeps M.2 SSDs safe while preventing throttling, making them run faster.
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.
COOLING
DESIGN
COMPATIBILITY
RELIABLE COMPONENTS
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.
STORAGE
USB
OTHER EXPANSION
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.
1x
1x
6x
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.
PERFORMANCE
AUDIO
BIOS & SOFTWARE
PCB WITH 2OZ THICKENED COPPER
An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking.
B550-A PRO
- Supports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors
- Supports DDR4 Memory, up to 4400(OC) MHz
- Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2
- Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works
- Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost
- Audio Boost: Reward your ears with studio grade sound quality
- Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire™
- Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.
© AMD, and the AMD Arrow logo, Radeon, FreeSync, and combinations thereof are trademarks of Advanced Micro Devices, Inc. DirectX and Microsoft are registered trademarks of Microsoft Corporation in the US and other jurisdictions. PCI Express is a registered trademark of PCI-SIG Corporation. Vulkan and the Vulkan logo are trademarks of the Khronos Group Inc. Other product names are for identification purposes only and may be trademarks of their respective companies.
All images and descriptions are for illustrative purposes only. Visual representation of the products may not be perfectly accurate. Product specification, functions and appearance may vary by models and differ from country to country . All specifications are subject to change without notice. Please consult the product specifications page for full details.Although we endeavor to present the most precise and comprehensive information at the time of publication, a small number of items may contain typography or photography errors. Products may not be available in all markets. We recommend you to check with your local supplier for exact offers.
Additional information
| Weight | 2 kg |
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