A Solid Foundation for Your Ryzen Build
The ASUS Prime series is famously engineered to maximize the performance of AMD architectures. The Prime B550M-A combines a refined power layout with high-quality components, offering a dependable and stable platform whether you are assembling a gaming rig, a professional workstation, or a home-office PC. Its micro-ATX (mATX) footprint perfectly balances compact size with excellent expansion capabilities.
Ultrafast Connectivity & PCIe 4.0
Take advantage of industry-leading data speeds to eliminate bottlenecks and reduce loading screens:
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PCIe 4.0 Ready: The primary PCIe x16 slot operates at PCIe 4.0 speeds, offering double the bandwidth of PCIe 3.0 to get the absolute most out of modern graphics cards.
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Dual M.2 Storage: Includes one lightning-fast PCIe 4.0 M.2 slot for next-gen NVMe SSDs, alongside a secondary PCIe 3.0 M.2 slot, giving you maximum flexibility for high-capacity, high-speed storage configurations.
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USB 3.2 Gen 2: Equipped with ultra-fast USB 3.2 Gen 2 Type-A ports on the rear I/O for rapid data transfers with external drives and peripherals.
Comprehensive Cooling & Smart Tuning
Keep your system running cool under pressure. The Prime B550M-A features a robust VRM heatsink and high-quality thermal pads that improve heat transfer from the MOSFETs and chokes. Combined with ASUS Fan Xpert 2+ software, you get comprehensive, real-time control over system fans to ensure the perfect balance between silent operation and maximum cooling.
Personalization and Aesthetics
Make your build stand out. The motherboard features onboard RGB headers and an Addressable Gen 2 header for compatible LED strips, all fully customizable and synchronizable through ASUS Aura Sync software.
Key Specifications at a Glance:
| Feature | Specification |
| Form Factor | Micro-ATX (mATX) |
| CPU Socket | AMD AM4 |
| Processor Support | AMD Ryzen™ 5000, 5000 G-Series, 4000 G-Series & 3000 Series |
| Memory Capacity | 4x DDR4 DIMM slots, up to 4600+ MT/s (Overclocked) |
| Expansion Slots | 1x PCIe 4.0/3.0 x16 slot, 2x PCIe 3.0 x1 slots |
| Storage Expansion | 1x M.2 Gen4 x4 slot, 1x M.2 Gen3 x4 slot, 4x SATA 6Gb/s |
| Networking | Realtek 1Gb Ethernet |
| Cooling | VRM heatsink, PCH heatsink, Fan Xpert 2+ |























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