ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard

The ASUS PRIME B550M-A/CSM is a Micro-ATX motherboard that brings the AMD B550 chipset to builders who want dependable performance without giving up valuable desk or case space. It works with AMD Ryzen processors from the 5000 series as well as the 4000 G series and 3000 series, so you can pair it with anything from a budget quad-core to a high-thread-count powerhouse.

Storage and memory move quickly thanks to two M.2 slots that use PCIe 4.0 bandwidth and four DIMM slots that accept up to 128 GB of DDR4 memory. Whether you are loading large game files, pulling footage into a video editor, or shuffling spreadsheets for work, the board keeps bottlenecks to a minimum.

Connectivity is handled by USB 3.2 Gen 2 ports that reach 10 Gb per second, Gigabit Ethernet for smooth online sessions, and three display outputs—HDMI, DVI, and VGA—that let you choose the monitor that fits your setup. Builders who enjoy visual flair can plug LED strips into the Aura Sync RGB headers and coordinate lighting with other ASUS components.

The PRIME B550M-A/CSM suits a wide range of users. A gamer who wants a compact tower, a content creator who needs several drives, or an office manager upgrading workstations can all drop this board into a Micro-ATX case and trust it to run day after day. VRM and PCH heatsinks help keep temperatures in check, while the ASUS 5X Protection III design guards against power surges, overcurrent, and other everyday hazards.

• Supports AMD Ryzen 5000 series, 4000 G series, and 3000 series processors
• Two M.2 slots with PCIe 4.0 for fast storage
• Four DIMM slots supporting up to 128 GB DDR4 memory
• USB 3.2 Gen 2 ports allow 10 Gb per second data transfers
• Gigabit Ethernet provides stable networking
• Display output through HDMI, DVI, and VGA
• Micro-ATX form factor that fits smaller cases
• Aura Sync RGB headers for lighting control
• ASUS 5X Protection III safeguards key components
• VRM and PCH heatsinks help maintain safe temperatures