MSI B550M-A PRO AMD AM4
R1,970.00 inc. VAT
The MSI B550M-A PRO is a Micro-ATX motherboard built on the AMD B550 chipset with an AM4 socket, supporting Ryzen 3000, 5000, and 4000 G-Series desktop processors. It features PCIe 4.0, a Gen4 x4 M.2 slot, dual DDR4 DIMM slots (up to 64GB / 4600MHz OC), and a 2oz thickened copper PCB for reliable thermals and long-term stability — making it a solid, no-fuss foundation for professional workstations and small form factor builds.
Description
Professional-Grade Foundation in a Compact Package
The MSI B550M-A PRO brings the reliability of MSI’s PRO series into a Micro-ATX form factor, making it an ideal choice for businesses, professionals, and system builders who need a dependable platform without unnecessary frills. Built on the AMD B550 chipset with an AM4 socket, it supports AMD Ryzen 3000 and 5000 Series desktop processors as well as Ryzen 4000 G-Series APUs — giving you flexibility across a wide range of builds. Note: not compatible with the Ryzen 5 3400G or Ryzen 3 3200G.
Storage & Connectivity
The B550M-A PRO delivers fast, future-ready connectivity with a PCIe 4.0 x16 slot and a Lightning Gen4 x4 M.2 slot for NVMe SSDs, alongside four SATA 6Gb/s ports for additional storage. USB 3.2 Gen 1 ports and legacy USB 2.0 headers keep your peripherals covered, while Gigabit LAN via the Realtek RTL8111H ensures stable wired networking. Display output is handled by HDMI 2.1 (up to 4K@60Hz) and DVI-D for systems using integrated graphics.
Memory & Power Design
Dual DDR4 DIMM slots support up to 64GB of RAM at speeds up to 4600MHz via A-XMP, with MSI’s DDR4 Boost technology ensuring clean signal integrity for stable high-speed operation. MSI’s Core Boost technology uses a premium digital power design to keep multi-core processors running reliably under sustained workloads — important for always-on business systems.
Build Quality & Reliability
The 2oz thickened copper PCB improves heat dissipation and conductivity across the board, contributing to the long-term reliability that MSI’s PRO series is known for. The onboard 7.1-channel HD audio (Realtek ALC892/ALC897) rounds out the feature set for users who want quality audio without a discrete sound card. Dragon Center software provides fan control, hardware monitoring, and BIOS management from a clean dashboard.
Key Highlights
- Socket AM4 — supports Ryzen 3000, 5000, and 4000 G-Series
- AMD B550 chipset with PCIe 4.0 support
- 2x DDR4 DIMM slots, up to 64GB, up to 4600MHz (OC)
- 1x Gen4 x4 M.2 slot + 4x SATA 6Gb/s
- Gigabit LAN, USB 3.2 Gen 1, HDMI 2.1 + DVI-D
- 7.1-channel HD audio
- Micro-ATX form factor (236 x 200mm)
- 2oz thickened copper PCB for enhanced durability
Proudly sold by the Ringwood Digital Store.
Additional information
| Weight | 1.12 kg |
|---|---|
| Dimensions | 24.38 × 24.38 × 3.81 cm |
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