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Green micro-ATX motherboard with black heatsinks and silver I/O shield

MSI

MSI MAG B550M BAZOOKA AMD Motherboard A

SKU CH-T8HS-VK10D

Micro-ATX B550 board for AM4 CPUs with two M.2 slots, one PCIe 3.0 x16 slot and 128 GB DDR4 maximum

  • CPU socketAM4
  • Form factorMicro ATX
  • Memory slot countDDR4
  • Max supported RAM128 GB
  • PCIe 3.0 x16 slots1x PCI Express 3.0 x16
  • PCIe x16 slots1
  • AM4 socket accepts compatible CPUs for system builds
  • B550 chipset provides PCIe 3.0 x16 slot for graphics cards
  • Two M.2 slots allow fast storage expansion
  • 128GB DDR4 memory capacity supports demanding workloads
  • Micro ATX form factor fits compact cases

Core platform

This motherboard uses the AMD B550 chipset and AM4 socket in a MicroATX form factor. It accepts DDR4 memory up to 128 GB across its slots. One PCI Express 3.0 x16 slot and a single PCI slot handle expansion cards. Rear I/O provides DisplayPort, a USB 3.1 Gen 2 Type-A port and one RJ45 LAN connection.

Build fit

The board suits builders assembling a compact AM4 system with standard DDR4 memory and a single graphics card. Two M.2 slots allow fast solid-state storage without extra cables. Buyers who need more than one x16 slot or additional rear USB ports should look at a larger form factor.

Deciding spec

The AM4 socket and B550 chipset define which processors and chipset features are available. Match the CPU to this socket before purchase. The single PCI Express 3.0 x16 lane layout also sets the ceiling for graphics performance.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $88.99
Cheaper than about 80% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Model nameMAG B550M BAZOOKA
Processor
CPU socketAM4
Memory
Memory slot countDDR4
Max supported RAM128 GB
Ports & slots
PCIe 3.0 x16 slots1x PCI Express 3.0 x16
PCIe x16 slots1
PCI slots1 x PCI Slot
Rear panel ports1 x DisplayPort / 1 x LAN (RJ45) / 1 x USB 3.1 Gen 2 Type-A
Ethernet port1 x RJ45
DisplayPort connectors1 x DisplayPort
USB 3.1 ports1 x USB 3.1
Size & build
Form factorMicro ATX

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