ASUS Prime B550M-K ARGB mATX Motherboard
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About this product
- Brand
- ASUS
- Store
- PC Case Gear
- Category
- Electronics > Circuit Boards & Components > Printed Circuit Boards > Computer Circuit Boards > Motherboards
- SKU
- PRIME-B550M-K-ARGB
The ASUS Prime B550M-K ARGB is an micro ATX motherboard and features the AM4 socket with support for Ryzen 5000, 4000 G-Series, and 3000 series processors, along with dual DDR4 DIMMs up to 64 GB and overclocked speeds up to 5100 MT/s. It includes PCIe 4.0 support for graphics and storage, dual M.2 slots (one PCIe 4.0 x4 and one PCIe 3.0 x4), and four SATA 6 Gb/s ports. Connectivity options include Realtek 1 Gb Ethernet, rear USB 3.2 Gen 1 ports, front USB 3.2 Gen 1 Type-C, and DisplayPort/HDMI outputs. The board also offers onboard addressable Gen 2 headers for RGB LED strips, Aura Sync compatibility, Q-LED Core diagnostics, Fan Xpert 2+ for cooling control and ASUS 5X Protection III for hardware safeguards.
Warning: This product contains a button battery
- If swallowed, a lithium battery can cause severe or fatal injuries with 2 hours.
- Keep batteries out of reach of children.
- If you think batteries may have been swallowed or placed inside any of the body, seek immediate medical attention.
Features
Prime B550M-K ARGB
AMD B550 (Ryzen™ AM4) mATX motherboard with dual M.2 slots, PCIe 4.0, Realtek 1Gb Ethernet, DisplayPort/HDMI™, SATA 6 Gbps, rear USB 3.2 Gen 1 ports, front USB 3.2 Gen 1 Type-C® and Aura Sync.
ASUS PRIME series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, PRIME B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features. This platform delivers the power and connectivity that advanced AI PC applications demand.
- Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
- AMD AM4 Socket: Ready for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
- Ultrafast Connectivity: PCIe 4.0, dual M.2 slots, Realtek 1Gb Ethernet, rear USB 3.2 Gen 1 ports and front USB 3.2 Gen 1 Type-C®
- Comprehensive Cooling: PCH heatsink, hybrid fan headers and Fan Xpert 2+
- Aura Sync RGB Lighting: Onboard Addressable Gen 2 headers for RGB LED strips, easily synced with Aura Sync-capable hardware
Specifications
- 2 x USB 2.0
- PS/2
- DP
- HDMI™
- 4 x USB 3.2 Gen 1
- Realtek 1Gb Ethernet
- 3 x Audio Jacks
- PCIe 4.0/3.0 x16
ASUS SafeSlot Core - Audio Features
Audio Shielding
Premium audio capacitors
Dedicated audio PCB layers - 2 x DDR4
- 3 x Addressable Gen 2 headers
- AMD AM4 Socket
- 2 x Front USB 3.2 Gen 1 Type-A
- 1 x Front USB 3.2 Gen 1 Type-C®
- 64Gb/s M.2 PCIe 4.0 x4 & SATA modes
- AMD B550 Chipset
- 32Gb/s M.2 PCIe 3.0 x4 & SATA modes
- 4 x SATA 6Gb/s
- 4 x Front USB 2.0
Flexibility
Comprehensive controls form the foundation of the ASUS PRIME series. The PRIME B550 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximise productivity.
Intelligent Control
EPU
All-Around Energy Efficiency
With the Energy Processing Unit (EPU), you‘ll enjoy system-wide power savings. The EPU automatically optimises power consumption and maximises savings with Away mode.
Fan Xpert 2+
Flexible Cooling Controls
ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
Digi+ VRM Control
Precise Digital 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.
UEFI BIOS
The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.
Advanced Mode
Advanced Tuning for Serious Tweakers
An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.
Search Function
Quickly and easily find the option or setting you need.
ASUS User Profile
Port configuration settings between different BIOS versions or share them with friends.
EZ Mode
Quick and Simple Setup
EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.
Intuitive Graphical Fan Control
Fine-tune individual fan settings simply by dragging a curve with the mouse.
Aura On/Off Mode (Stealth)
Easily enable or disable Aura RGB lighting or every onboard LED, for a subdued aesthetic touch.
Cooling
PRIME B550 series are engineered with an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.
Cooler by Design
PRIME B550 series feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.

Multiple Temperature Sources
Each header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimise cooling for GPU- and CPU-intensive tasks.

Smart Protection
A dedicated integrated circuit protects each fan header from overheating and overcurrent.

4-Pin PWM/DC Fan
Each onboard header supports auto-detection of PWM or DC fans.
Performance
PRIME B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible data transfer options.

Storage
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