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MSI MAG B550M MORTAR MAX WIFI AM4 AMD B550 Micro‑ATX Motherboard Core Specs -
CPU Support: Socket AM4, compatible with AMD Ryzen™ 5000 Series, 5000 G‑Series, 4000G‑Series, and 3000 Series processors . -
Chipset: AMD B550 . -
Memory: 4×DDR4 DIMM slots (dual‑channel, up to 128GB) supporting DDR4 4400MHz (OC) . -
Expansion: 1×PCIe 4.0/3.0 x16 slot (CPU‑direct), 1×PCIe 3.0 x16 slot (x4 mode), 2×PCIe 3.0 x1 slots . -
Storage: 2×M.2 slots (M.2_1 supports PCIe 4.0 x4; M.2_2 supports PCIe 3.0 x4 & SATA), 6×SATA 6Gb/s ports (supports RAID 0/1/10) . -
Connectivity: -
LAN: Realtek® RTL8125B 2.5Gbps Ethernet . -
Wireless: AMD® Wi‑Fi 6E (RZ608) with Bluetooth® 5.2 . -
Rear I/O: 1×USB 3.2 Gen 2 Type‑C (10Gb/s), 1×USB 3.2 Gen 2 Type‑A, 2×USB 3.2 Gen 1, 2×USB 2.0, HDMI 2.1, DisplayPort 1.4, optical S/PDIF out, 5×audio jacks . -
Audio: Realtek® ALC1220P 7.1‑channel HD audio . -
Power Design: 8+2+1‑phase digital VRM with 60A Dr.MOS . -
Form Factor: Micro‑ATX (24.4 cm × 24.4 cm) . Condition (Used) -
Pulled from a working system—no disassembly/repairs, all original components intact. -
Minor cosmetic wear (light scratches on PCB/heatsink; see photos). -
Fully tested (boots/posts; all ports/interfaces work properly). -
Pins (CPU socket, memory slots) undamaged; no bent or missing pins. Notes for Buyers -
No original packaging or accessories included (e.g., driver CDs, manuals, Wi‑Fi antenna, SATA cables). -
Photos are of the actual item—review carefully to assess cosmetic condition. -
Check MSI’s official website for CPU compatibility and BIOS updates (supports AMD Ryzen 5000/3000 series; may require update for newer APUs) . -
M.2_2 shares bandwidth with the bottom PCIe x16 slot—only one can be used at a time . -
Requires a dedicated AM4 CPU cooler bracket (not included). Ideal For: Budget‑conscious gamers and builders seeking a well‑rounded B550 Micro‑ATX motherboard with PCIe 4.0 support, Wi‑Fi 6E, 2.5Gb LAN, dual M.2 slots, and robust 8+2+1‑phase power delivery for mid‑range AMD CPUs like Ryzen 5 5600X or Ryzen 7 5800X. Perfect for compact gaming rigs, home‑office setups, and content‑creation stations that demand reliable performance, modern connectivity, and excellent value in a small form factor .  |
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