AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A AMD AM4 socket: Ready for Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors Comprehensive cooling: PCH heatsink and Fan Xpert 2+ Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A 5X Protection III: Multiple hardware safeguards for all-around system protection Shop Modal header Prime B550M-A (WI-FI) Tune It Your Way Cool to the Core Build on a Solid Foundation Little Things Make a Big Difference PS/2 2 x USB 3.2 Gen 1 DVI-D D-Sub HDMI 2 x USB 3.2 Gen 2 Realtek LAN 2 x USB 3.2 Gen 1 3 x Audio jacks PCIe 4.0 x16ASUS 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 for Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors 2 x Front USB 3.2 Gen 1 64Gb/s M.2 supportPCIe 4.0 x4 & SATA mode AMD B550 Chipset 32Gb/s M.2 supportPCIe 3.0 x4 & SATA mode 4 x SATA 6Gb/s 4 x Front USB 2.0 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. ASUS Corporate Stable Model ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software. Learn more about ASUS Corporate Stable Model > * Lifecycle support for consumer chipsets (eg. Q370, H370, B360,H270,B250) is set at 15 months. Program offerings may vary by region. Please consult your local sales representative for more information. ASUS Control Center Express ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs. Learn more about ASUS Control Center Express > Optimize IT endpoint management Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely Automate IT maintenance Allows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility Securely manage all of endpoints Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices 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. Intelligent Control UEFI BIOS EPU Fan Xpert 2+ 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 2+ 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. Back to Tune It Your Way↑ 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. Advance Mode EZ 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. 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 B550M-K is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ 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 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 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. Storage Connectivity 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 10+1 DrMOS Power Stages 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↑ 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↑ 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 PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform. Back to Build on a Solid Foundation↑ 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↑ USB 3.2 Gen 2Type-A Numerous USB ports support high-end rigs loaded with peripherals, including two rear-panel USB Type-A connectors with fast USB 3.2 Gen 2 connectivity for compatible cases. Back to Build on a Solid Foundation↑ 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 interface that let you customize your system to create a uniquely personal look. Audio Personalization DIY Friendly 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 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. 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. 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↑