ASUS PRIME B550M-K – AMD B550 Chipset (Socket AM4) PCIe 4.0 Micro-ATX Motherboard

  • Chipset: AMD B550
  • CPU Socket: AMD AM4
  • Supported CPU: AMD Ryzen 5000, 4000-G and 3000 Serires
  • Memory Slots: 4
  • PCIe Gen 4 X16 Slots: 1
  • Form Factor: Micro-ATX

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GTIN: 04718017758284


The ASUS PRIME B550M-K motherboard is expertly engineered to unleash the full potential of the 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, ASUS Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.


  • Chipset: AMD B550
  • CPU Socket: AMD AM4
  • Supported CPU: AMD 2nd/3rd Gen Ryzen
  • Memory Slots: 4
  • PCIe Gen 4 X16 Slots: 1
  • Form Factor: Micro-ATX
  • AMD AM4 socket: Ready for Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
  • Comprehensive cooling: PCH heatsink and Fan Xpert 2+
  • Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
  • 5X Protection III: Multiple hardware safeguards for all-around system protection

AMD B550




Gen 4.0



Form Factor

About the ASUS PRIME B550M-K Motherboard

ASUS PRIME B550M-K Rear Angled View

Precise Power Control

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.

ASUS PRIME B550M-K Front Angled View

Cooler by Design

The ASUS Prime B550M-K is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS, ensuring your rig stays cool and stable under intense workloads.

ASUS PRIME B550M-K Flat View

PCIe 4.0 M.2
(up to 64 Gbps)

PCIe 4.0 M.2 Slot provides NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with PCIe 4.0 storage devices to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.

ASUS PRIME B550M-K Flat Angled View

Safeslot Core

SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a fortified design that’s anchored to the motherboard by a special hook. Safeslot Core provides 1.6X-stronger retention and 1.3X-greater shearing resistance than standard expansion slots.

Intelligent design and premium hardware create audio quality, unlike anything you’ve ever experienced.

Audio Shielding

Separates analogue/digital signal domains, significantly reducing multi-lateral interference.

Separate Layer for Left and Right Tracks

Ensures minimal crosstalk between audio paths.

Premium Japanese Capacitors

The ASUS PRIME B550M-K is fitted with premium parts to provide an immersive sound signature, with exceptional fidelity.

Product Specifications

General Information

2 kg


28 × 28 × 6 cm