The MSI MEG B550 UNIFY-X is a high-performance AMD B550 (Socket AM4) ATX motherboard designed for AMD Ryzen 5000 & 3000 Series processors (excluding Ryzen 5 3400G & Ryzen 3 3200G) and Ryzen 4000 G-Series APUs. It features a robust 14+2+1 phase VRM design with 90A power stages for extreme overclocking, supporting dual-channel DDR4 memory up to 64GB across two DIMM slots with speeds up to 5100+ MHz (OC). The board includes 4x M.2 slots (one PCIe 4.0 x4 from CPU, three PCIe 3.0 x4 from chipset) and 6x SATA 6Gbps ports with RAID 0/1/10 support. Expansion slots consist of 1x PCIe 4.0 x16, 1x PCIe 3.0 x16 (x4 electrical), and 2x PCIe 3.0 x1 slots. Networking features Intel Wi-Fi 6 AX200 (2.4Gbps) with Bluetooth 5.1 and a Realtek RTL8125B 2.5G LAN controller. Rear I/O offers 4x USB 3.2 Gen2 (including Type-C), 4x USB 2.0, HDMI 2.1, and 7.1-channel audio with S/PDIF output. Additional highlights include BIOS Flashback, dual 8-pin CPU power conNECtors, multiple RGB/ARGB headers, and an integrated I/O shield. The motherboard measures 30.4cm x 24.4cm in standard ATX form factor, optimized for enthusiasts seeking uncompromising performance and exPANDAbility.