MSI B550M-A PRO Motherboard

MSI B550M-A PRO Motherboard

Compact and to the point, the B550M-A PRO brings PCIe 4.0 to a small Micro-ATX Socket AM4 board — a processor-fed x16 slot, a PCIe 4.0 M.2 slot and Realtek Gigabit LAN, so a Ryzen build gets modern bandwidth without a large or expensive motherboard. Supplied brand new and sealed in its original manufacturer packaging.

📋 Specifications

• Brand: MSI
• Model: B550M-A PRO
• CPU Socket: AMD Socket AM4
• Chipset: AMD B550
• Form Factor: Micro-ATX (23.6 cm x 20 cm)
• Memory: 2x DDR4 DIMM slots, dual channel, up to 64GB
• Memory Speed: DDR4-3200 MHz (JEDEC), up to 4600+ MHz via A-XMP overclocking
• Expansion Slots: 1x PCIe 4.0/3.0 x16, 1x PCIe 3.0 x1
• M.2: 1x M.2 slot, PCIe 4.0/3.0 and SATA (2242/2260/2280)
• SATA: 4x SATA 6Gb/s ports
• Rear USB: 4x USB 3.2 Gen 1 5Gbps Type-A, 2x USB 2.0 Type-A
• Rear Video Output: 1x HDMI 2.1, 1x DVI-D
• LAN: Realtek RTL8111H Gigabit LAN
• Audio: Realtek ALC892/ALC897 codec, 7.1-channel High Definition Audio
• Wireless: Not included on this model

⚡ Key Features

• PCIe 4.0 on both the x16 slot and the M.2 slot gives a modern graphics card and NVMe drive twice the bandwidth of a PCIe 3.0 board.
• Support for AMD Ryzen 5000 and 3000 series desktop processors on Socket AM4 keeps upgrade paths open.
• Two DDR4 slots reach 64GB and clock to 4600+ MHz with A-XMP enabled.
• The M.2 slot takes either an NVMe or a SATA drive in 2242, 2260 or 2280 lengths, so most drives simply fit.
• Four SATA 6Gb/s ports carry over existing SSDs and hard drives from an older build.
• HDMI 2.1 and DVI-D outputs drive a monitor directly from a Ryzen APU with no graphics card installed.
• Realtek RTL8111H Gigabit LAN handles wired networking, and the Realtek codec covers 7.1-channel audio.
• At 23.6 x 20 cm this is one of the smaller Micro-ATX boards, useful when case clearance is tight.

🛡️ SQUADRIG Assurance

• Brand new and sealed in original manufacturer packaging
• Sourced from authorised local distributors
• Checked on arrival and securely packed for delivery
• Honest listings — specifications are taken from the manufacturer's own published data

🔑 Product Details

• Brand: MSI
• Model: B550M-A PRO
• Condition: Brand new
• SKU: MOH-MSI-B550M-NEW-1735