Technical Snapshot

The MSI B550M-A PRO is a Micro-ATX motherboard based on the B550 chipset for AMD AM4 processors. It supports DDR4 memory with up to 64 GB across 2 DIMM slots, 1G LAN LAN, and 1 M.2 slots.

Use Case
Desktop PC builds, gaming, workstation
Compatibility
AMD AM4 processors
Category
Micro-ATX Motherboard — B550 Chipset
MSI B550M-A PRO
MSI PRODUCT
MSI

B550M-A PRO

B550 · AMD AM4 · Micro-ATX · DDR4 up to 64 GB

CPU socket: AMD AM4. Compatible with AMD Ryzen desktop processors.
SocketAMD AM4
Maximum supported memory: 64 GB DDR4 across 2 DIMM slots.
Max RAM64 GB
B550 chipset with PCIe and M.2 expansion slots.
ChipsetB550
Micro-ATX form factor — compact build compatible.
Form FactorMicro-ATX
MPNB550M-A PRO
CategoryMotherboards
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Connectivity & Expansion

PCIe x161
M.2 Slots1
SATA Ports4
LAN1G LAN
AudioRealtek ALC892

Full Specifications

ChipsetB550
SocketAMD AM4
Form FactorMicro-ATX
Memory TypeDDR4
DIMM Slots2
Max RAM64 GB
PCIe x16 Slots1
M.2 Slots1
SATA Ports4
LAN1G LAN
AudioRealtek ALC892

Support & Downloads

Latest Firmware & DriversVisit MSI for the latest updates
MSI Downloads →
MSI B550M-A PRO DocumentationPDF · Installation guide and specifications
MSI Support →
← Back to MSI Motherboard Catalog

Frequently Asked Questions

What socket does the MSI B550M-A PRO use?

The MSI B550M-A PRO uses the AMD AM4 socket, compatible with AMD Ryzen desktop processors.

How much RAM does the MSI B550M-A PRO support?

The MSI B550M-A PRO supports up to 64 GB of DDR4 memory across 2 DIMM slots.

Does the MSI B550M-A PRO have Wi-Fi?

No, the MSI B550M-A PRO does not include built-in Wi-Fi.

How many M.2 slots does the MSI B550M-A PRO have?

The MSI B550M-A PRO has 1 M.2 slot for NVMe SSD storage.

What chipset does the MSI B550M-A PRO use?

The MSI B550M-A PRO is built on the B550 chipset, offering Micro-ATX form factor design for AMD platforms.

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