ASUS PRIME B550M-A WIFI II micro ATX motherboard

ASUS PRIME B550M-A WIFI II | Compact AMD Ryzen Motherboard

The ASUS PRIME B550M-A WIFI II is a micro ATX motherboard built for AMD Ryzen 3000 and 5000 series processors on the AM4 socket. Designed for users seeking a balance of performance, connectivity, and compact form factor, it delivers robust power delivery, Wi-Fi 6, and comprehensive cooling in a space-efficient package.

Quick Specs

Performance & Tuning

The ASUS PRIME B550M-A WIFI II offers extensive tuning options via its UEFI BIOS, catering to both beginners and experienced builders. The EZ mode provides quick access to key settings, while Advanced mode unlocks detailed control over voltages, frequencies, and fan curves. Features like EZ XMP allow one-click DRAM optimisation, and Fan Xpert 2+ enables precise thermal management by linking fan speeds to multiple temperature sensors.

Connectivity & Expansion

This motherboard supports PCIe 4.0 for ultra-fast NVMe SSDs and graphics cards, ensuring future-proof performance. With two M.2 slots, four SATA III ports, and support for RAID 0, 1, and 10, storage flexibility is a key strength. The inclusion of Wi-Fi 6 and Bluetooth 5.2 provides robust wireless connectivity, while Gigabit Ethernet via Realtek RTL8111H ensures stable wired networking.

Cooling & Durability

Engineered for sustained performance, the PRIME B550M-A WIFI II features a VRM heatsink with thermal pads for efficient heat dissipation. Multiple hybrid fan headers support both PWM and DC fans, and SafeSlot Core technology reinforces PCIe slots against physical damage. Overvoltage and DRAM overcurrent protection safeguard components from electrical faults, extending system longevity.

Package Contents

• 2 x SATA 6Gb/s cables
• 1 x ASUS Wi-Fi moving antennas
• 1 x I/O shield
• 1 x M.2 SSD screw package
• 1 x Support DVD
• 1 x User manual

Check Before You Buy

• Confirm your AMD Ryzen CPU is from the 3000 or 5000 series for full compatibility.
• Verify your case supports micro ATX motherboards.
• Check that your power supply has the required 24-pin ATX and 8-pin EPS connectors.
• Confirm your intended storage devices match the available M.2 and SATA interfaces.

Common questions

Our take

The ASUS PRIME B550M-A WIFI II is an excellent choice for compact AMD Ryzen builds requiring strong connectivity, expandability, and reliable performance. Its micro ATX size makes it ideal for smaller cases without sacrificing features. Covered by the applicable manufacturer warranty.