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  • VIDEO
Product Overview Video鶹 Product Imaging
  • MSI B550-A PRO ProSeries Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX)
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MSI B550-A PRO ProSeries Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX)

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About this item

  • Support for 3rd Gen AMD Ryzen Processors and future AMD Ryzen processors with BIOS update
  • Supports dual channel DDR4 memory up to 128 GB (4400 MHz)
  • Lightning Fast Game experience: PCIe 4.0, Lightning Gen 4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 GEN 2. USB 3.2 ports (Front): 1(Gen 1, Type C), 2(Gen 1, Type A), USB 3.2 ports (Rear): 1(Gen 2, Type C), 1(Gen 2, Type A), 2(Gen 1, Type A)
  • Core Boost technology combines optimized power circuit layouts and digital power regulation which allows for precise and steady current delivery to the CPU
  • AUDIO BOOST rewards your ears with studio grade sound quality for immersive gaming experiences
  • Premium Thermal Solution: Heatsink thermal pad rated for 7W/mk and PCB with 2oz thickened copper
  • Flash BIOS Button lets users flash the BIOS even without a CPU or memory
  • Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost

Frequently bought together

This item: MSI B550-A PRO ProSeries Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX)
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Product information

Technical Details

Summary
RAM ‎DDR4
Memory Speed ‎6
Number of USB 2.0 Ports ‎2
Brand ‎MSI
Series ‎B550-A PRO
Item model number ‎B550-A PRO
Product Dimensions ‎30.48 x 24.38 x 3.81 cm; 1.5 kg
Item dimensions L x W x H ‎30.5 x 24.4 x 3.8 Centimetres
Number of Processors ‎1
Memory Type ‎DDR4 SDRAM
Voltage ‎1 Volts

Additional Information

ASIN B089CZSQB4
Customer Reviews
4.5 out of 5 stars 3,568 ratings

4.5 out of 5 stars
鶹 Rank
Date First Available June 16 2020
Manufacturer MSI COMPUTER
Place of Business CITY OF INDUSTRY, CA, 91748 US

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MSI B550-A PRO ProSeries Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX)


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Product description

MSI B550-A PRO ProSeries Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX)

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Top Brand: MSI

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From the manufacturer

msi b550-a pro

msi gaming

MSI is the most trusted name in gaming and eSports. We’ve dedicated countless hours and committed numerous resources to support the world’s most aspiring and best gamers and use their knowledge and expertise in our products in return. MSI integrated all gamer’s aspirational functions in its gaming rigs and pushing the performance beyond limits.

B550-A PRO

Advancing Ascension

Powered by AMD Ryzen AM4 processors, the MSI B550-A PRO combines stable functionality and high-quality assembly to solve professional workflows. Extended Heatsink Design and Core boost keep critical components operating reliably. PCIe 4.0 slots and M.2 with Shield Frozr provides the latest in device connectivity.

  • Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
  • Supports dual channel DDR4 memory up to 128 GB (4400 MHz)
  • Lightning Fast Game experience: PCIe 4.0, Lightning Gen 4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 GEN 2
  • Core Boost technology combines optimized power circuit layouts and digital power regulation which allows for precise and steady current delivery to the CPU
  • AUDIO BOOST rewards your ears with studio grade sound quality for immersive gaming experiences
  • Premium Thermal Solution: Heatsink thermal pad rated for 7W/mk and PCB with 2oz thickened copper
  • Flash BIOS Button lets users flash the BIOS even without a CPU or memory

msi lightning gen 4 pci-e

LIGHTNING GEN 4 SOLUTION

Strike fast with MSI Lightning Gen 4 PCI-E. Attach ultra fast PCI-E 4.0 devices and enjoy up to 64GB/s unidirectional transfer bandwidth.

msi extended heatsink

EXTENDED HEATSINK

An all-metal extended heatsink enlarges the heat dissipation surface allowing the CPU power system to reliably drive even high-end processors.

msi core boost

CORE BOOST

Core Boost combines a reserved zone of optimized circuits and premium power delivery components to create a highly efficient power system capable of precise current output to the CPU.

msi pcb 2oz thickened copper

PCB WITH 2OZ THICKENED COPPER

An enhanced PCB material design with 2oz thickened copper increases conductivity, improving heat dissipation and high-performance reliability.

msi atypical edge

EASY TO ARRANGE YOUR CABLES

Tuck away SATA and USB cables neatly with MSI Atypical PCB edge.

msi pci-e steel armor

FORTIFY WITH PCI-E STEEL ARMOR

MSI PCI Express Steel Armor slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage in games counts, Steel Armor shields the point of contact from electromagnetic interference.

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Customer Reviews
4.6 out of 5 stars 5,752
4.5 out of 5 stars 462
4.5 out of 5 stars 433
4.2 out of 5 stars 400
4.5 out of 5 stars 3,568
4.5 out of 5 stars 3,841
CPU Support Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update
Chipset / Socket AMD B550 / AM4 AMD B550 / AM4 AMD B550 / AM4 AMD B550 / AM4 AMD B550 / AM4 AMD B550 / AM4
DDR4 Memory Support 4 x DIMM; Max. 128GB DDR4; 4866+ MHz 4 x DIMM; Max. 128GB DDR4; 4400+ MHz 4 x DIMM; Max. 128GB DDR4; 4400+ MHz 4 x DIMM; Max. 128GB DDR4; 4400+ MHz 4 x DIMM; Max. 128GB DDR4; 4400+ MHz 4 x DIMM; Max. 128GB DDR4; 4400+ MHz
PCIe x16 Slots 1x PCIe 4.0 x16 slots (x16); 1x PCIe 3.0 x16 slots (x4); 2x PCIe 3.0 x1 slots 1x PCIe 4.0 x16 slots (x16); 1x PCIe 3.0 x16 slots (x4); 2x PCIe 3.0 x1 slots 1x PCIe 4.0 x16 slots (x16); 1x PCIe 3.0 x16 slots (x4); 2x PCIe 3.0 x1 slots 1x PCIe 4.0 x16 slots (x16); 2x PCIe 3.0 x1 slots 1x PCIe 4.0 x16 slot (x16 / x4); 1x PCIe 3.0 x16 slot (x4); 2x PCIe 3.0 x1 slots 1x PCIe 4.0 x16 slots (x16); 2x PCIe 3.0 x1 slots
Display Output HDMI, DisplayPort (requires processor graphics) HDMI, DisplayPort (requires processor graphics) HDMI, DisplayPort (requires processor graphics) HDMI, DisplayPort (requires processor graphics) HDMI, DisplayPort (requires processor graphics) HDMI, DisplayPort, VGA (requires processor graphics)
M.2 2x M.2 2x M.2 2x M.2 2x M.2 2x M.2 2x M.2
Wireless n/a 2x2 Wi-Fi with MU-MIMO 802.11 a/b/g/n/ac/ax n/a n/a n/a 1x1 Wi-Fi 802.11 a/b/g/n/ac
Ethernet LAN 2.5G LAN & Gigabit LAN 2.5G LAN 2.5G LAN Gigabit LAN Gigabit LAN Gigabit LAN
Mystic Light 16.8 million colors n/a n/a n/a n/a n/a
Form Factor ATX Micro-ATX Micro-ATX Micro-ATX ATX Micro-ATX

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