AMD B550 (Ryzen AM4) ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, DisplayPort/HDMI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A and Type-C, and Aura Sync RGB headers support

    • AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors
    • Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A and Type-C
    • Comprehensive cooling: VRM heatsinks, PCH heatsink, and Fan Xpert 4
    • Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware
      Product Image
      TUF H370 Plus Gaming TUF H370 Plus Gaming
      • 2 x USB 3.2 Gen 2
        (1 x Type-C, 1 x Type-A)

      • Realtek RTL8111H

      • DP

      • HDMI

      • 4 x USB 3.2 Gen 1 (Type-A)

      • S/PDIF output

      • PCIe 4.0 x16
        ● ASUS SafeSlot

      • PCIe 3.0 x16 (max. @x4)
        ● ASUS SafeSlot Core

      • Audio Features
        ● LED-illuminated design
        ● Audio Shielding
        ● Premium Japanese
        audio capacitors
        ● Dedicated audio
        PCB layers

      • Thunderbolt header

      • AURA RGB header

      • DIGI+ VRM & EPU

      • DDR4 support

      • AMD AM4 Socket

      • 2 x Front USB 3.2 Gen 1

      • 64Gb/s M.2, support
        PCIe 4.0 x4 & SATA mode

      • AMD B550 Chipset

      • 6 x SATA 6Gb/s

      • 32Gb/s M.2, support
        PCIe 3.0 x4 & SATA mode

      • 4 x Front USB 2.0

      • Addressable Gen 2 header

      • AURA RGB header

      ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation 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.

      Tune It Your Way

      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 you to tweak performance settings to perfectly match the way you work – maximizing your productivity.

      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 Air- and Liquid-Cooling Controls

      Fan Xpert 4 software provides comprehensive control over fans, water pumps and all-in-one (AiO) coolers. Whether cooling with air or water, an Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces all fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans, water pumps and AiO coolers can also be controlled via the UEFI BIOS.

      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.

      Back to Tune It Your Way


      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.

      EZ XMP
      Improve DRAM performance with one click.

      Aura On/Off mode (Stealth)
      Easily enable or disable Aura RGB lighting or every onboard LED, for a subdued aesthetic touch.

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      Cool to the Core

      Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.

      VRM Heatsink and Thermal Pads

      Two massive VRM heatsinks with underneath thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.

      VRM Heatsink and Thermal Pads

      Two massive VRM heatsinks with underneath thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance. A bundled fan holder provides additional cooling options.

      Stack Cool 3+

      2oz-copper layers shift heat away from critical components, reducing the temperature by up to 20°C.

      Back to Cool to the Core

      Cooler by Design

      Prime B550 series features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.

      • Multiple Temperature Sources
      • AIO Pump Header
      • Smart Protection
      • 4-Pin PWM/DC Fan
      • 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.

      • A dedicated PWM/DC header for self-contained water-cooling setups.

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

      • Each onboard chassis fan header supports PWM and DC mode.

      Back to Cool to the Core

      Build on a Solid Foundation

      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 transfer options.

      ProCool Connectors

      Proprietary connectors augment the motherboard's link to the PSU with 8+4 pin connectors that pass 12 volts of power directly to the processors. The jacks feature solid pins that can handle more current than hollow-pin connectors.

      10+1 DrMOS Power Stages

      A VRM with 10+1 DrMOS Power Stages delivers the power and efficiency that the latest Intel processors demand.

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      ASUS OptiMem II

      Revisions to the motherboard's trace routing provide the latest Intel processors with unrestricted access to memory bandwidth. ASUS OptiMem II technology carefully maps memory signal pathways across different PCB layers to reduce vias and adds shielding zones that significantly reduce crosstalk.

      Top layer – ground ring to prevent lateral interference

      ASUS OptiMem II benefits:

      • Improved memory stability and compatibility
      • Allows lower memory latencies at equivalent voltages
      • Improved memory frequency margin

      Motherboards with OptiMem II technology were tested with Synopsys HSPICE simulation software

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      PCIe 4.0 M.2
      (up to 64 Gbps)

      Achieve Speed With Onboard M.2

      PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to 64Gbps PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.

      * The M.2_1 supports PCIe 4.0 and the M.2_2 supports PCIe 3.0.

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      USB 3.2 Gen 2
      Type-A & Type-C

      Numerous USB ports support high-end rigs loaded with peripherals, including a USB Type-C® and a Type-A® connectors with fast USB 3.2 Gen 2 connectivity for compatible cases.

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      Thunderbolt™ 3 Support

      Prime B550-Plus supports ThunderboltEX 3-TR, an Intel certified Thunderbolt™ 3 add-on card that enables bi-directional speeds of up to 40 Gbps via a single cable. Additionally, an integrated Thunderbolt 3 header can support up to six devices in a daisy-chain and provide up to 100 watts of power to fast-charge devices.

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      Little Things Make a Big Difference

      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.

      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.

      DRAM Overcurrent Protection

      Short-circuit damage prevention

      Onboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.

      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.


      Pumped-up throughput 2.5X higher surge tolerance

      ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.

      Learn more


      Compatible devices and components

      The Prime B550 series provides superior compatibility with thousands of components and our Qualified Vendor List (QVL) identifies memory compatibility, giving you more choices for worry-free PC-building experiences.


      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.

      Outstanding Audio

      Combined onboard features deliver elevated audio

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

      Audio Shielding

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

      Separate Layer for Left and Right Tracks

      Ensures minimal crosstalk between audio paths.

      Premium Japanese Capacitors

      Premium parts provide an immersive sound signature, with exceptional fidelity.

      Flawless Audio that Immerses You in the Game

      Power Pre-Regulator

      Reduces power-input noise to ensure consistent performance.

      Audio Shielding

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

      Separate Layer for Left and Right Tracks

      Ensures minimal crosstalk between audio paths.

      Integrated Amplifier

      Capable of driving high-impedance headphones, without rolling-off high or low frequencies.

      De-Pop Circuit

      Reduces start-up popping noise to all audio outputs.

      Premium Japanese Capacitors

      Premium parts provide an immersive sound signature, with exceptional fidelity.

      Back to Little Things Make a Big Difference

      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 RGB LED strips connected to the onboard RGB headers. And it can all be synced with an ever-growing portfolio of Aura-capable hardware.

      Learn more >
      • Static Static
      • Breathing Breathing
      • Strobing Strobing
      • Rainbow Rainbow
      • Color cycle Color Cycle
      • Starry night Starry Night
      • Music effect Music Effect
      • CPU temperature Smart

      Addressable Gen 2 RGB Header

      The addressable Gen 2 RGB header is now 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 header also offers backward-compatibility with existing Aura RGB gear.

      Armoury Crate

      Armoury Crate is a new software utility designed to give you centralized control of supported products. From a single intuitive interface, Armoury Crate allows you to easily customize RGB lighting and effects for every compatible device in your arsenal. The software also provides control of settings for ASUS products, including keyboard and mouse preferences. Armoury Crate even features dedicated product registration and highlight to help you stay in touch with the ASUS community.

      • Aura Sync

      • Driver & Manual Download

      • Account Management

      Back to Little Things Make a Big Difference
      Back to Little Things Make a Big Difference