The MSI MAG B550M MORTAR WIFI is a micro-ATX motherboard featuring the AMD B550 chipset for Socket AM4 processors, supporting AMD Ryzen 5000, 3000, and 4000 G-Series desktop CPUs (excluding Ryzen 5 3400G and Ryzen 3 3200G). It boasts 4 DDR4 DIMM slots with dual-channel architecture, supporting up to 128GB memory at JEDEC speeds up to 3200MHz and overclocked speeds up to 4400MHz via A-XMP. The board includes 1 PCIe 4.0 x16 slot (CPU-linked) and 1 PCIe 3.0 x16 slot (chipset-linked, x4 mode), plus 2 PCIe 3.0 x1 slots, with AMD CrossFire multi-GPU support. Storage options feature 6 SATA 6Gb/s ports and 2 M.2 slots (M2_1: PCIe 4.0x4/SATA, M2_2: PCIe 3.0x4), supporting RAID 0/1/10 for SATA and RAID 0/1 for NVMe. Networking includes Realtek RTL8125B 2.5G LAN and Intel Wi-Fi 6 AX200 (802.11ax, 2.4Gbps) with Bluetooth 5.2. Graphics outputs consist of HDMI 2.1 (4K@60Hz) and DisplayPort, while audio features Realtek ALC1200/1220P 7.1-channel HD audio with S/PDIF. Rear I/O offers USB 3.2 Gen2 Type-C/A (10Gbps), 2.5G LAN, Wi-Fi antennas, and BIOS Flashback button. The board measures 24.4cm x 24.4cm with reinforced PCIe slots, RGB lighting headers, and comprehensive cooling options.