MSI has expanded its AM4 motherboard lineup with three new models based on the AMD B550 chipset. The release includes one microATX board, the Pro B550M WIFI6E, and two ATX boards, the Pro B550-S and Pro B550-S WIFI6E. These products are designed for AMD Ryzen 3000, 4000G, and 5000 series processors.
The microATX Pro B550M WIFI6E features two DIMM slots for DDR4 memory up to 4600+ MT/s, one PCIe 4.0 x16 slot, and two PCIe 3.0 x1 slots. Storage options include one M.2 PCIe 4.0 x4 slot and four SATA III ports. The board comes with a pre-installed Wi-Fi 6E module and a basic chipset heatsink.
The ATX models, Pro B550-S and Pro B550-S WIFI6E, include four DIMM slots supporting up to 128 GB of DDR4 RAM at speeds of 4800+ MT/s. These boards feature enhanced cooling with dedicated heatsinks for the VRM, chipset, and the primary M.2 slot. Expansion options consist of two PCIe x16 slots, one PCIe x1 slot, and two M.2 slots.
Connectivity on the ATX models includes USB Type-A and Type-C ports with speeds of 5 Gbps and 10 Gbps. All three new motherboards are equipped with the Realtek ALC897 7.1-channel audio codec and the Realtek RTL8111H gigabit network controller. MSI has not yet disclosed pricing or international availability.
