AMD B450 (Ryzen AM4) micro ATX motherboard with M.2 support, HDMI/DVI-D/D-Sub, SATA 6 Gbps, 1 Gb Ethernet, USB 3.2 Gen 1 Type-A, BIOS FlashBack™
Comprehensive cooling: PCH heatsink and Fan Xpert
  • Ultrafast connectivity: M.2 support, 1 Gb Ethernet, and USB 3.2 Gen 1 Type-A
  • 5X Protection III: Multiple hardware safeguards for all-around system protection
  • LED illumination: Lighting control for both PCIe slot and audio trace paths
    • Win11
    PRIME B450M-K II
    TUF H370 Plus Gaming TUF H370 Plus Gaming

    • BIOS FlashBack™
      button

    • D-Sub

    • DVI-D

    • HDMI

    • PS/2

    • 2 x USB 3.2 Gen 1

    • 2 x USB 2.0

    • Realtek LAN

    • 2 x USB 3.2 Gen 1

    • 3 x Audio jacks

    • PCIe 3.0 x16
      ● ASUS SafeSlot Core

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

    • DIGI+ VRM & EPU

    • DDR4 Support

    • AMD AM4 Socket

    • AMD B450 Chipset

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

    • 4 x SATA 6Gb/s

    • 2 x Front USB 3.2 Gen 1

    • 4 x Front USB 2.0

    ASUS Prime B450M II Series motherboards provide the solid foundation needed for your first build, plus flexibility to grow with your ambitions. We've melded all the good stuff that's packed into AMD Ryzen™ processors with essential ASUS design and engineering, so you benefit from industry-leading technologies — including automated system tuning, comprehensive cooling controls, and immersive onboard audio. When you build with an ASUS Prime B450M II Series motherboard, you build smart, easy and affordably.

    Tune It Your Way

    Comprehensive controls form the foundation of the ASUS Prime series. The Prime B450M II 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.

    EPU

    Fan Xpert

    Digi+ VRM 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.

    Flexible Cooling Controls

    Fan Xpert software provides comprehensive control over system fans. 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.

    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.

    *Specifications and features vary by model, and all images are illustrative. Please refer to specification and gallery pages for full details.

    Back to Tune It Your Way
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    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.

    EZ XMP
    Improve DRAM performance with one click.

    Back to Tune It Your Way
    ↑

    Cooler by Design

    PRIME B450M-K II is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert software or via the UEFI BIOS, ensuring your rig stays cool and stable under intense workloads.

    • Multiple Temperature Sources
    • Smart Protection
    • 4-Pin PWM/DC Fan

    • Each header can monitor and react to dedicated thermal sensors.

    • A dedicated integrated circuit protects the fan header, including short circuit and over temperature protections.

    • The onboard CHA FAN header supports PWM and DC mode.

    Back to Cool to the Core
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    Build on a Solid Foundation

    Prime B450M II 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.

    Robust Power Design

    Stable power is essential to extract every last bit of performance out of 10th Generation Intel Core processors, Prime B550 is geared to cater to the demands of these high-core count CPUs.

    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.

    Back to Build on a Solid Foundation
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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

    Back to Build on a Solid Foundation
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    PCIe 3.0 M.2
    (up to 32 Gbps)

    Achieve speed with onboard M.2

    M.2 Slot supports data-transfer speed up to 32Gbps via x4 PCI Express® 3.0 bandwidth. It‘s the perfect choice for an operating system or application drive, providing fast access to data.

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    Intel® WiFi 6 AX200

    The Intel® WiFi 6 AX200 module is compatible with the 802.11ax standard and pushes theoretical peak bandwidth up to an incredible 2.4 Gbps. Perhaps more importantly for power users, it's optimized for more efficient operation on crowded networks with a lot of competing traffic. Pair your motherboard with ASUS WiFi 6 routers to fully experience the networking potential of WiFi 6.

    Learn more >
    Intel WiFi 6 AX200
    2.4 Gbps
    Other wireless adapters
    0.86 Gbps

    * Actual speed varies, and depends on networking conditions.

    Back to Get the Most out of All Your Cores
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    USB 3.2 Gen 1
    Type-A

    Numerous USB ports support high-end rigs loaded with peripherals, including four rear-panel USB Type-A connectors with fast USB 3.2 Gen 1 connectivity for compatible cases.

    Back to Build on a Solid Foundation
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    Little Things Make a Big Difference

    Prime B450M II series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a unique personal look.

    SafeSlot Core

    Fortified PCIe slot prevents damage

    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.

    ASUS Prime motherboards have strengthened solder points around both the PCIe and DIMM pins.

    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.

    LANGuard

    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

    1000+

    Compatible devices and components

    The Prime B450M II 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.

    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.

    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.

    BIOS FLASHBACK™

    BIOS FlashBack™ is the simplest and safest (UEFI) BIOS update method. Simply drop the (UEFI) BIOS file onto a FAT32 formatted USB stick, plug it into the USB BIOS FlashBack™ port and press the button. Updates can even be performed without having memory or a CPU installed.

    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 provides control of settings for ASUS products, including keyboard and mouse preferences. This software even features dedicated product registration and highlight to help you stay in touch with the ASUS community.


    • Driver & Manual Download

    • Account Management

    Download Now
    Back to Little Things Make a Big Difference
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