MSI B550M Gaming Plus WiFi6E DDR4 Micro-ATX Motherboard (AM4, B550, Wi-Fi 6E)

The MSI B550M Gaming Plus WiFi6E is a Micro-ATX motherboard built on the AMD B550 chipset with an AM4 socket, designed to support AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series, and 3000 G-Series processors. Its compact Micro-ATX form factor makes it a practical choice for space-conscious gaming and productivity builds that still demand modern connectivity and performance headroom. At the heart of its connectivity offering is an integrated Wi-Fi 6E module paired with Bluetooth 5.3, enabling high-speed wireless networking on the 6 GHz band alongside the established 2.4 GHz and 5 GHz frequencies. A dedicated 1 Gigabit LAN port is also present on the rear panel for wired connections. The primary PCIe x16 slot operates at PCIe 4.0 (sourced directly from the CPU), enabling maximum bandwidth for the latest discrete graphics cards, while two additional PCIe 3.0 x1 slots (chipset-sourced) provide room for expansion cards. Memory support is provided through dual-channel DDR4 DIMM slots, accommodating up to 128 GB of non-ECC, unbuffered DDR4 memory. Speeds range from JEDEC standards up to 4400+ MT/s (OC) via A-XMP mode, with the exact achievable speed depending on the CPU and DIMM configuration. The M.2 slot operates at Lightning Gen 4 x4 speeds (PCIe 4.0 x4), and MSI's M.2 Shield Frozr thermal solution helps manage SSD temperatures under sustained workloads. For builders, EZ Debug LEDs aid in rapid troubleshooting during POST, and EZ Mounting features help protect the board during installation. Internal I/O headers include support for addressable V2 RGB (2x JARGB_V2) and standard RGB (2x JRGB) lighting strips, a front-panel USB Type-C header (USB 5 Gbps), four USB 2.0 internal ports, and two additional USB 5 Gbps Type-A headers. A TPM 2.0 pin header is also present. Rear I/O outputs include HDMI and DisplayPort for integrated graphics on compatible APUs. MSI's Core Boost power delivery design and Solid Pin power connectors (8-pin CPU_PWR, 24-pin ATX) aim to provide stable current to the CPU. TVS (Transient Voltage Suppressors) and OCP (Overcurrent Protection) circuits are incorporated as hardware safety measures. The extended heatsink and dedicated chipset heatsink assist thermal management at sustained loads. Audio Boost provides an isolated audio circuit for improved signal quality through the rear audio jacks, managed through the MSI Center software suite. Specifications Summary: - Socket: AM4 | Chipset: AMD B550 | Form Factor: Micro-ATX - CPU Support: AMD Ryzen 5000, 5000G, 4000G, 3000, 3000G Series - Memory: DDR4, Dual Channel, up to 128 GB, up to 4400+ MT/s (OC, A-XMP) - Primary PCIe Slot: 1x PCIe 4.0 x16 (CPU); Additional: 2x PCIe 3.0 x1 (Chipset) - M.2: Lightning Gen 4 x4 (PCIe 4.0 x4) with M.2 Shield Frozr - Wireless: Wi-Fi 6E, Bluetooth 5.3 | Wired LAN: 1 Gbps - Display Out: 1x HDMI, 1x DisplayPort (rear panel) - RGB Headers: 2x JARGB_V2 (Addressable V2), 2x JRGB - Front Panel USB: 1x USB Type-C 5Gbps, 2x USB 5Gbps Type-A, 4x USB 2.0 - Warranty: 3 Years