Performance, Reliability, and Customisation for Ryzen™ Builds

The ASUS B550M-K Motherboard delivers a powerful yet compact platform for AMD Ryzen™ processors. Designed with PCIe 4.0, dual M.2 slots, ARGB lighting, and USB 3.2, it’s ideal for gamers, creators, and users building reliable AM4-based systems in a micro-ATX form factor.

Its compact micro-ATX form factor makes it suitable for smaller builds without sacrificing features. Equipped with USB 3.2 Gen 1 ports, front-panel USB Type-C®, and Realtek Gigabit Ethernet, you get fast, stable connectivity across all applications.

Cooling is enhanced with a PCH heatsink, hybrid fan headers, and Fan Xpert 2+, ensuring efficient temperature control during demanding workloads. ASUS Aura Sync with addressable Gen 2 headers provides stunning RGB customisation to match your style.

Key Features – ASUS PRIME B550M-K ARGB

• Socket AM4 Support: Ready for Ryzen™ 5000/5000G/4000G/3000 Series processors.
• High-Speed Memory: Supports DDR4 up to 5100MHz (OC), dual-channel, max 64GB.
• Storage: Dual M.2 slots (PCIe 4.0 & 3.0) and 4× SATA 6Gb/s with RAID 0/1/10.
• Graphics Outputs: HDMI™ 2.1 and DisplayPort 1.4 with support up to 4K@60Hz.
• Connectivity: Realtek 1Gb LAN, USB 3.2 Gen 1 Type-A and Type-C®, plus multiple USB 2.0.
• Audio: Realtek 7.1 Surround HD Audio with premium capacitors and shielding.
• Durability: ASUS 5X Protection III safeguards with DIGI+ VRM, LANGuard, SafeSlot Core.
• ARGB Lighting: Aura Sync with onboard addressable Gen 2 headers for full RGB control.

The ASUS PRIME B550M-K ARGB is perfect for users who demand stability, fast connectivity, and visual flair in a compact and affordable motherboard.

Browse more ASUS motherboards here.

Specifications – ASUS PRIME B550M-K ARGB

• CPU Socket: AM4
• Chipset: AMD B550
• CPU Support: Ryzen™ 5000/5000G/4000G/3000 Series
• Memory: 2× DIMM, up to 64GB DDR4, speeds up to 5100MHz (OC)
• Expansion: 1× PCIe 4.0 x16, 1× PCIe 3.0 x1
• Storage: 2× M.2 (PCIe 4.0/3.0 & SATA), 4× SATA 6Gb/s, RAID 0/1/10
• LAN: Realtek 1Gb Ethernet
• USB (Rear): 4× USB 3.2 Gen1 Type-A, 2× USB 2.0
• USB (Front): 1× USB 3.2 Gen1 Type-C, 2× USB 3.2 Gen1, 4× USB 2.0
• Graphics Outputs: HDMI™ 2.1, DisplayPort 1.4
• Audio: Realtek 7.1 HD Surround Sound, 24-bit/192kHz
• RGB: Aura Sync with 3× addressable Gen 2 headers
• Cooling: PCH heatsink, 1× CPU fan, 2× chassis fan headers, Fan Xpert 2+
• BIOS: 128Mb Flash ROM, UEFI AMI
• Form Factor: mATX (24.4 × 22.1 cm)

What’s in the Box

• ASUS PRIME B550M-K ARGB AM4 mATX Motherboard – Black
• 2× SATA 6Gb/s cables
• I/O Shield
• M.2 SSD screw package
• User Manual