* Free items are subject to availability, please check this is added to your basket on check out. AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ processors Comprehensive cooling: PCH heatsink & Fan Xpert 2 Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB (Universal Serial Bus) 3.2 Gen 2 Type-a 5X Protection III: Multiple hardware safeguards for all-around system protection 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 & intelligent tuning options, Prime B550 series motherboards provide daily users & DIY PC builders a range of performance tuning options via intuitive software & firmware features. Cooler by Design Prime B550M-K is engineered with an array of hybrid fan headers & features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS, ensuring your rig stays cool & stable under intense workloads. Each header can dynamically reference three thermal sensors. Fan Xpert 2+ means that you can map the temperature of supported ASUS graphics cards to optimise cooling for GPU- & CPU-intensive tasks. 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 & 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. 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 customise your system to create a uniquely personal look.