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. Intelligent Control EPU 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. Fan Xpert 4 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. 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. 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. 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. Heatsinks VRM Heatsink and Thermal Pads A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance. 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 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. AIO Pump Header A dedicated PWM/DC header for self-contained water-cooling setups. Smart Protection A dedicated integrated circuit protects each fan header from overheating and overcurrent.  4-Pin PWM/DC Fan Each onboard chassis fan header supports PWM and DC mode. 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 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. * The M.2_1 supports PCIe 4.0 and the M.2_2 supports PCIe 3.0. Connectivity USB 3.2 Gen 2 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. Thunderbolt™ 3 Support Prime B550-Plus supports ThunderboltEX 3-TR, an Intel certified Thunderbolt&