Build a powerful, space-saving rig with this ASUS B550 micro ATX gaming motherboard for AMD Ryzen 3rd–5th Gen processors on socket AM4. With 4x DDR4 DIMM slots supporting up to 128GB RAM at 4400MHz OC, it’s perfect for high-FPS gaming and streaming. Enjoy PCIe 4.0 x16 for modern GPUs, dual M.2 PCI/SATA slots for ultra-fast NVMe SSDs, and AMD CrossFireX multi-GPU support. Connectivity includes HDMI 2.1, DVI-D, D-Sub, USB 3.2 Gen1/Gen2, USB-C, Gigabit LAN, Bluetooth, and 7.1 Realtek ALC887 audio. An ideal foundation for a versatile Ryzen gaming PC.
ASUS PRIME B550M-A AM4, AMD B550, mATX
| Form factor | Micro ATX (mATX) |
| Socket | AM4 |
| Chipset | AMD B550 |
| Mainboard features | Serial header, Trusted Platform Module |
| Operating system compatibility | Windows 10 |
| BIOS type | UEFI AMI |
| Wireless transmission | Bluetooth |
| Processor family | Ryzen 3rd generation, Ryzen 4th Gen, Ryzen 5th Gen |
| Memory form factor | DIMM |
| Number of memory modules (RAM) | 4 x |
| Max. memory (RAM) | 128 GB |
| Memory chip | DDR4 RAM |
| Max. RAM OC | 4400 MHz |
| Supported memory speed | 4400 MHz |
| Memory type | DDR4-RAM |
| RAM buffer | Unbuffered |
| Video connections | D-Sub (1x), DVI-D (1x), HDMI (1x) |
| Video connection version | HDMI 2.1 |
| Multi-GPU technology | AMD CrossfireX |
| Network connections | RJ45 (1x) |
| Ethernet controller brand | Realtek |
| Ethernet controller | Realtek RTL8111H |
| Max. port speed | 1 Gbit/s |
| Chip | Realtek ALC887 |
| Audio channel | 7.1 Channel |
| Audio Connections | Headphones |
| RAID configuration | 10 |
| Internal connection options | M.2 PCI/SATA Combo (2x) |
| Expansion slot | PCI Express x16 (Gen 4) (1x) |
| PCI express version (max.) | 4 |
| Number of fan connector | 6 |
| USB ports | USB-A |
| Exact USB ports | USB-A 3.2 Gen 1 (4x), USB-A 3.2 Gen 2 (2x), USB-C 4 (1x) |
| Power connectors | 20+8 pin ATX |
| Length | 244 mm |
| Width | 244 mm |
| Height | 275 mm |
| Weight | 990 g |




































