MSI B550M Pro DDR4 AMD Motherboard

The MSI B550M PRO-DASH is a Micro-ATX form factor motherboard built on the AMD B550 chipset and designed for the AM4 socket, with native support for 3rd Generation AMD Ryzen processors. Future AMD Ryzen processor support is available through a BIOS update. The board measures 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm) and is equipped with 8 mounting holes conforming to the standard Micro-ATX layout. Memory capacity reaches up to 128GB across four DDR4 DIMM slots, supporting dual-channel unbuffered operation. JEDEC-rated speeds cover DDR4-1866 through DDR4-3200, while A-XMP overclock profiles extend potential speeds up to DDR4-4400+ depending on memory configuration. Both ECC and non-ECC UDIMM modules are supported. Expansion is handled by one PCIe 3.0/4.0 x16 slot and two PCIe 3.0 x1 slots. Storage options include four SATA 6Gb/s ports and two M.2 Key-M slots: M2_1 (sourced from the AMD processor) supports PCIe 4.0/3.0 x4 and SATA, while M2_2 (sourced from the B550 chipset) supports PCIe 3.0 x4. RAID 0, 1, and 10 are available for SATA drives; RAID 0 and 1 are available for NVMe M.2 drives. MSI's M.2 Shield Frozr thermal cover is included to help manage SSD operating temperatures. Display outputs on the rear panel include one VGA port, one DisplayPort (up to 4096x2160 @ 60Hz), and one HDMI 2.1 port (up to 4096x2160 @ 60Hz), all dependent on a processor with integrated graphics. Maximum shared graphics memory is 16GB. Connectivity includes a Realtek RTL8111EPV 1Gbps LAN controller with DASH support for out-of-band remote management, along with a Realtek ALC892/ALC897 codec delivering 7.1-channel HD audio. USB ports total seven on the rear panel (four USB 3.2 Gen 1 Type-A from the processor, two USB 2.0 Type-A, and one USB 3.2 Gen 1 Type-A from the chipset), with additional headers for internal expansion. A Flash BIOS Button on the rear panel allows firmware recovery without a CPU installed. RGB personalisation is supported via two 4-pin RGB LED connectors and two 3-pin RAINBOW LED connectors, manageable through MSI's Dragon Center software. A TPM module connector, chassis intrusion header, and Clear CMOS jumper are also present. Power delivery uses a 24-pin ATX main connector and an 8-pin ATX 12V connector, with a Digital PWM IC and 2oz thickened copper PCB layers cited as stability enhancements. The board carries a 3-year manufacturer warranty and has undergone over 7,000 hours of industrial-level validation testing according to MSI. Verifiable Specifications: - Socket: AM4 | Chipset: AMD B550 - Form Factor: Micro-ATX, 24.4 cm x 24.4 cm - Memory: 4x DDR4 DIMM, up to 128GB, DDR4-1866 to DDR4-3200 (JEDEC), up to DDR4-4400+ (A-XMP OC) - Expansion: 1x PCIe 3.0/4.0 x16, 2x PCIe 3.0 x1 - Storage: 4x SATA 6Gb/s, 2x M.2 Key-M (PCIe 4.0/3.0 x4 + SATA on M2_1; PCIe 3.0 x4 on M2_2) - Display: VGA, DisplayPort (4K@60Hz), HDMI 2.1 (4K@60Hz) - LAN: Realtek RTL8111EPV 1Gbps - Audio: Realtek ALC892/ALC897, 7.1-Channel HD - USB (rear): 4x USB 3.2 Gen 1 Type-A (CPU) + 2x USB 3.2 Gen 1 Type-A (chipset) + 2x USB 2.0 - Warranty: 3 Years