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

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

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PRIME B550M-K ARGB

ASUS estore price starting at

Prime series motherboard provides users and PC DIY builders a range of performance tuning options via intuitive software and firmware features.

PRIME B550M-K ARGB

B550M-K ARGB

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.

All specs of the Prime series motherboar

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 maximize productivity.

Intelligent Control

All-Around Energy Efficiency

With the Energy Processing Unit (EPU), you‘ll enjoy system-wide power savings.The EPU automatically optimizes power consumption and maximizes savings with Away mode.

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 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.

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.

Prime motherboard with multiple temperature sources image

Prime motherboard with smart protection image

Prime motherboard with 4-Pin PWM/DC Fan image

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 optimize 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* via PCIe 4.0, enabling quicker boot-up and app load times with OS or application drives.

* 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.

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.

CUSTOMIZATION

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 customize your system to create a uniquely personal look.

Outstanding Audio

500M

Deep-learning database

Audio

Input/output

High

Fidelity

Minimal

Performance Impact

Hear the Difference

Background noise

Other human voice

Human speech

Realtek Codec and Unique Design Features for Pristine, Powerful Audio

The unique S1220A audio codec designed in close collaboration with Realtek provides pristine audio quality via an unprecedented 120 dB signal-to-noise (SNR) ratio for the stereo line out and a 113 dB SNR for the line in. An impedance-sensing circuit also adjusts gain for optimal headphone volume.

DTS:X^® Ultra adds a spatial audio feature to boost headphones and speakers for enhanced gaming, VR and extended-reality experiences. DTS:X Ultra supports sound based on channels, scenes, and objects to allow for deeper sonic immersion in enabled content. It also provides post-processing enhancements and device-level tuning for DTS^® codecs.

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 analog/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.

Personalization

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.

Learn More

Static

Breathing

Strobing

Rainbow

Color 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 customized 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.
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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

This motherboard motherboard features Q-LED Core.

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

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 B550 series provides superior compatibility with thousands of components and our 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.

Aging tests

Up to 48-hour aging 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.

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Timeline Backup

Auto Backup for Your Computer!

ASUS user’s special offer.｜Buy 1TB get 200GB free.

Exclusive AEMP

ASUS Enhanced Memory Profile (AEMP) is an exclusive firmware feature for PMIC-restricted memory modules. AEMP automatically detects the memory chips on your kit and then presents optimized frequency, timing and voltage profiles that you can effortlessly apply to unleash performance.

Recommend for you

PRIME B550M-A WIFI II

AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support

PRIME B550M-K ARGB

PRIME B550M-K ARGB

PRIME B550M-K ARGB

B550M-K ARGB

Specification

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

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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 maximize productivity.

Intelligent Control

CPU Performance Boost

AMD Precision Boost Overdrive(PBO) pushes the CPU current and voltage budget to opportunistically increase performance. By aggressively tuning the PBO parameters, AMD‘s algorithm can leverage the motherboard’s robust power solution to ramp up performance even higher.

All-Around Energy Efficiency

With the Energy Processing Unit (EPU), you‘ll enjoy system-wide power savings.The EPU automatically optimizes power consumption and maximizes savings with Away mode.

Flexible Cooling Controls

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 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.

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.

.clll1, .clll3 { fill: #5e5e5e; } .clll1, .clll2 { opacity: 0.35; } COOLING .clll1, .clll3 { fill: #5e5e5e; } .clll1, .clll2 { opacity: 0.35; }

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 optimize 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.

.clll1, .clll3 { fill: #5e5e5e; } .clll1, .clll2 { opacity: 0.35; } PERFORMANCE .clll1, .clll3 { fill: #5e5e5e; } .clll1, .clll2 { opacity: 0.35; }

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* 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.

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.

WiFi 6

.clll1, .clll3 { fill: #5e5e5e; } .clll1, .clll2 { opacity: 0.35; } CUSTOMIZATION .clll1, .clll3 { fill: #5e5e5e; } .clll1, .clll2 { opacity: 0.35; }

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 customize your system to create a uniquely personal look.

Outstanding Audio

500M

Deep-learning database

Audio

Input/output

High

Fidelity

Minimal

Performance Impact

PCIe 4.0/3.0 x16
• ASUS SafeSlot Core

Audio Features
• Audio Shielding
• Premium audio capacitors
• Dedicated audio PCB layers

1 x Front USB 3.2 Gen 1 Type-C^®

64Gb/s M.2
PCIe 4.0 x4 & SATA modes

32Gb/s M.2
PCIe 3.0 x4 & SATA modes

FLEXIBILITY

COOLING

PERFORMANCE

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.

CUSTOMIZATION

PCIe^® Slot Q-Release

1000+
Compatible devices and components

8000+
Validation hours