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.
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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
Dual M.2 Slots (Up to 64 Gbps)
PRIME B550M-K ARGB offers a total of two M.2 slots, one of which supports data-transfer speeds of up to 64Gbps (Actual transmission speeds will be lower than the theoretical maximum speed.) (Only AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors support PCIe 4.0 mode.) via PCIe 4.0, enabling quicker boot-up and app load times with OS or application drives.
Connectivity
PCIe 4.0 Slot
PRIME B550M-K ARGB offers PCIe 4.0 slot connectivity for the GPUs. The wide bandwidth and superfast transmission speeds allow you to create feature-rich builds that can handle high loads effortlessly.
* Only AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors support PCIe 4.0 mode.
Front USB Type-C®
A full complement of USB ports support high-end rigs loaded with peripherals, including a front-panel USB 3.2 Gen 1 Type-C® connector that provides data transfer speeds of up to 5Gbps.
Customisation
The PRIME B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customise your system to create a uniquely personal look.
Outstanding Audio
Combined Onboard Features Deliver Elevated Audio
Intelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.
Audio Shielding
Audio shielding ensures precision analogue/digital separation and greatly reduced multi-lateral interference.
Dedicated Audio PCB Layers
Separate layers for left and right tracks ensures both channels deliver consistent, equal quality.
Premium Audio Capacitors
Provides warm, natural, and immersive sound with exceptional clarity and fidelity.
Personalisation
Aura Sync
Outshine the Competition
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs as well as strips and devices connected to the onboard RGB headers — and it can all be synced with an ever-growing portfolio of Aura-capable hardware.
- Static
- Breathing
- Strobing
- Rainbow
- Colour Cycle
- Starry Night
- Music Effect
- Smart
Addressable Gen 2 Headers
Three addressable Gen 2 headers are capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new headers also offer backward-compatibility with existing Aura RGB gear.
Armoury Crate
Within a single intuitive interface, Armoury Crate offers easily customised Aura Sync RGB settings for every compatible device in your arsenal , plus controls for an ever-growing family of ASUS products, including keyboard and mouse preferences. Armoury Crate also integrates product registration and a news feed so that you never miss updates of interest to the ASUS community.
- Dashboard
- Aura Sync
- Driver & Manual Download
- Account Management
DIY-Friendly
Q-LED Core
The Q-LED Core display produces light patterns by power LED during the Power-On Self-Test (POST) that can help users troubleshoot potential issues.
- No CPU Detected - Fast blinking 4 Hz (0.25s)
- No VGA Detected - Slow blinking 1/2 Hz (2s)
- No Boot Device Detected - Very slow blinking 1/8 Hz (8s)
- Installation Completed - Solid light
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.
Overvoltage Protection
World-Class Circuit-Protecting Power Design
An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
Stainless-Steel Back I/O
3X Corrosion-Resistance for Greater Durability
Corrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.
1000+ Compatible Devices and Components
The Prime B650 series provides superior compatibility with thousands of components and the ASUS memory support list identifies memory compatibility, giving you more choices for worry-free PC-building experiences.
8000+ Validation Hours
Every ASUS motherboard is subjected to more than 8,000 hours of stringent tests, including burn-in, environmental, compatibility, software and safety tests to confirm their durability. ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
Temperature and Humidity Tests
Ensures components withstand extreme conditions.
Thermal Measurement Tests
Ensures that the system remains cool and stable under the heaviest loads.
Insertion Tests
Every port and connector is put through repeated installation cycles.
Ageing Tests
Up to 48-hour ageing test ensures reliability.
Power-Consumption Tests
Checked for world-class energy efficiency.
Temperature and DC Margin Tests
Ensures that the motherboard is capable of coping with voltages fluctuations caused by varying temperatures.
Thermal-Shock Tests
Ensures ability to survive temperature changes during transportation.
Non-Operation Shock Tests
Built to withstand jolts that may occur during shipping.
Burn-In Tests
Every component is checked to ensure flawless operation.
Installation Tests
Connector placement is double-checked to ensure hassle-free installation.
Drop Tests
Drop tests from various heights ensure durability.
Salt and Spray Tests
Tested for I/O reliability, prolonged lifespan and rust-resistance.
Backed by a 3 year ASUS warranty.
