The MSI MEG B550 UNIFY is a high-performance AMD B550 (Socket AM4) ATX motherboard designed for AMD Ryzen 5000 & 3000 Series processors (excluding Ryzen 5 3400G/3 3200G) and Ryzen 4000 G-Series APUs. Featuring a robust 14+2+1 phase VRM design with 90A power stages, it supports Dual Channel DDR4 memory up to 128GB across 4 DIMM slots with official support for 5100MHz+(OC) via A-XMP. The board provides 2x PCIe 4.0/3.0 x16 slots (one Gen4 x16 from CPU, one Gen3 x4 from chipset) with Steel Armor reinforcement, plus 4x M.2 slots (including PCIe 4.0 x4 support) and 6x SATA 6Gbps ports with RAID 0/1/10 support. Networking features include Realtek RTL8125B 2.5G LAN and Intel Wi-Fi 6 AX200 (2.4Gbps, BT 5.1). Premium conNECtivity includes USB 3.2 Gen2x2 Type-C (20Gbps), 7.1-channel ALC1220P audio with S/PDIF out, and HDMI 2.1 (4K@120Hz). Unique features include debug LED, EZ LED control, dual BIOS, and extensive RGB lighting support with Corsair compatibility. The blacked-out design measures 30.4cm x 24.4cm in standard ATX form factor.