The MSI MPG B550 GAMING PLUS is an AMD B550 (Socket AM4) ATX gaming motherboard designed for 3rd Gen AMD Ryzen processors with PCIe 4.0 support. It features an enhanced power delivery system with extended heatsink design for stable performance. The board supports Dual Channel DDR4 memory up to 128GB across 4 DIMM slots with speeds up to 4400MHz(OC).

Storage options include 6x SATA 6Gb/s ports supporting RAID 0/1/10 configurations and two M.2 slots - one PCIe 4.0 x4 (from CPU) supporting 2242/2260/2280/22110 devices, and one PCIe 3.0 x4 (from chipset) supporting 2242/2260/2280 devices, both with NVMe RAID 0/1 support.

Networking features a Realtek 8111H Gigabit LAN controller, while conNECtivity includes USB 3.2 Gen2 10Gbps (1x Type-C + 1x Type-A), USB 3.2 Gen1 5Gbps (3x including internal Type-C), and 8x USB 2.0 ports. Audio is handled by Realtek ALC897 7.1-channel HD Audio with S/PDIF output.

The motherboard features comprehensive cooling with 1x CPU fan, 1x water pump, and 6x system fan conNECtors. RGB lighting is supported through 1x 4-pin RGB and 2x 3-pin RAINBOW LED conNECtors. Back panel I/O includes DisplayPort, HDMI, PS/2 combo, BIOS Flash button, and optical S/PDIF out. The ATX form factor measures 30.5cm x 24.4cm with reinforced PCIe slots and pre-installed I/O shield for easy installation.