MSI B550M-A PRO AM4 Motherboard – DDR4 4600MHz OC, PCIe 4.0 x16, Gen4 M.2 NVMe, HDMI 4K, USB 3.2 Gen1, Core Boost, 2oz Copper PCB, mATX Ryzen 5000 Ready, Support Ryzen 5000 / 3000 / 4000G Series
95 $
Categories: COMPUTER PARTS, Motherboards
Expert Features
- AMD B550 Chipset (AM4 Ryzen 5000 Ready) : Built for Ryzen 5000 / 3000 / 4000G series, delivering a modern platform with PCIe Gen4 support for gamers and productivity builds.
- PCIe 4.0 Performance (GPU + NVMe) : Unlock next-gen bandwidth with PCIe 4.0 x16 slot and Gen4 M.2 NVMe, ideal for faster GPUs and ultra-speed SSDs.
- DDR4 Memory Up To 4600MHz (OC) : Dual-channel memory with A-XMP support ensures high-frequency stability and improved system responsiveness.
- Core Boost Power Design : Optimized digital VRM layout delivers stable power for multi-core CPUs under heavy workloads.
- Lightning Gen4 M.2 (64Gbps) : Ultra-fast storage interface dramatically reduces boot times, game loading, and large file transfers.
- 2oz Thickened Copper PCB : Enhanced PCB design improves heat dissipation, signal integrity, and long-term reliability.
- DDR4 Boost Technology : Isolated memory traces ensure cleaner signals and maximum compatibility at higher frequencies.
- Audio Boost (7.1 HD Audio) : Powered by Realtek ALC892/897, delivering clean and immersive audio for gaming and content consumption.
- Full Fan Control (BIOS + Software) : Advanced fan tuning with temperature-based curves ensures optimal cooling and low noise operation.
- Professional PRO Series Design : Clean industrial look with stable components, ideal for business builds, workstations, and budget gaming rigs.
- USB 3.2 Gen1 Connectivity : Multiple high-speed USB ports for peripherals, storage, and accessories.
- DIY-Friendly Layout : Logical header placement, easy installation, and wide compatibility with components.






Expert Specs
| Category | Specification |
|---|---|
| Model | MSI B550M-A PRO |
| Chipset | AMD B550 |
| CPU Socket | AM4 |
| CPU Support | Ryzen 5000 / 3000 / 4000G Series |
| Form Factor | Micro-ATX |
| Dimensions | 23.6 × 20 cm |
| Memory | 2 × DDR4 DIMM |
| Max Memory | 64GB |
| Memory Speed | Up To 4600 MHz (OC) |
| Memory Features | Dual Channel, A-XMP, Non-ECC / ECC (Non-ECC Mode) |
| PCIe Slots | 1 × PCIe 4.0 x16 / 1 × PCIe 3.0 x1 |
| Storage | 1 × M.2 (PCIe 4.0/3.0) / 4 × SATA 6Gb/s |
| RAID | RAID 0 / 1 / 10 (SATA & NVMe) |
| Graphics Outputs | HDMI 2.1 (4K@60Hz), DVI-D |
| LAN | Gigabit LAN (RTL8111H) |
| USB Rear | 4 × USB 3.2 Gen1 / 2 × USB 2.0 |
| USB Front | 2 × USB 3.2 Gen1 / 4 × USB 2.0 |
| Audio | Realtek ALC892 / ALC897 |
| Cooling Headers | CPU Fan / System Fan |
| Internal Headers | TPM, Clear CMOS, Front Audio |
| OS Support | Windows 10 / 11 |
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