MSI B840M Gaming Wifi6e DDR5 AMD Motherboard

The MSI B840M Gaming Plus WiFi 6E is a Micro-ATX motherboard built around the AMD B840 chipset and the AM5 socket, designed to support AMD Ryzen 9000, 8000, and 7000 series desktop processors. Measuring 226 mm x 243.84 mm, it fits standard mATX chassis while delivering a feature set suited to dedicated gaming builds and enthusiast workstations. At the heart of its power delivery sits a 7+2+1 phase VRM configuration paired with an 8-pin CPU power connector and MSI's Core Boost technology, ensuring stable power delivery under sustained loads. Memory support extends to two DDR5 UDIMM slots with a combined maximum capacity of 128 GB. With Ryzen 9000 series processors, single-rank single-DIMM configurations can reach overclocking speeds beyond 8000 MT/s, while JEDEC-compliant speeds begin at 4800 MT/s. AMD EXPO memory profiles are supported alongside manual overclocking. Storage connectivity is handled by two M.2 slots — both sourced from the CPU and supporting PCIe 4.0 x4 for 2280 and 2260 form-factor drives — alongside four SATA 6 Gbps ports. RAID 0, RAID 1, and RAID 10 configurations are available for SATA devices. The primary PCIe x16 slot operates at PCIe 4.0 speeds when paired with Ryzen 9000 or 7000 processors, while a secondary slot provides PCIe 3.0 x4 bandwidth from the chipset. Networking is handled by a Realtek 8125D 2.5G wired LAN controller alongside a pre-installed Wi-Fi 6E wireless module supporting 2.4 GHz, 5 GHz, and 6 GHz bands at up to 2.4 Gbps throughput with MU-MIMO TX/RX. Bluetooth 5.3 is included. Rear I/O video outputs consist of one HDMI 2.1 port and one DisplayPort 1.4 port, each capable of 4K 60 Hz output when used with a processor featuring integrated graphics. USB connectivity spans 2x USB 2.0 and 4x USB 5 Gbps Type-A ports on the rear panel, with 4x USB 2.0, 2x USB 5 Gbps Type-A, and 1x USB 5 Gbps Type-C headers available internally for front-panel connections. Audio is managed by a Realtek ALC897 codec delivering 7.1-channel HD audio. Lighting headers include three Addressable V2 RGB (JARGB_V2) connectors and one standard RGB (JRGB) connector, controlled via MSI Center's Mystic Light utility. Diagnostics are aided by four EZ Debug LEDs and one EZ Memory Detection LED. Onboard protections include Transient Voltage Suppressors (TVS) on power lines and an anti-corrosive stainless steel I/O shield. Verified Specifications: - Model: B840M Gaming Plus WiFi 6E - Chipset: AMD B840 - Socket: AM5 - CPU Compatibility: AMD Ryzen 9000 / 8000 / 7000 series - Form Factor: mATX (226 mm x 243.84 mm) - Memory: 2x DDR5 UDIMM, max 128 GB; up to 8000+ MT/s (OC), 4800 MT/s (JEDEC) - Storage: 2x M.2 PCIe 4.0 x4 (2280/2260), 4x SATA 6 Gbps - PCIe: 1x PCIe 4.0 x16 (CPU), 1x PCIe 3.0 x4 (chipset) - LAN: Realtek 8125D 2.5G - Wireless: Wi-Fi 6E (2.4/5/6 GHz, up to 2.4 Gbps), Bluetooth 5.3 - Audio: Realtek ALC897, 7.1-channel HD - Video Out: HDMI 2.1 + DisplayPort 1.4 (4K 60 Hz, iGPU required) - USB Rear: 2x USB 2.0, 4x USB 5 Gbps Type-A - USB Internal: 4x USB 2.0, 2x USB 5 Gbps Type-A, 1x USB 5 Gbps Type-C - RGB: 3x JARGB_V2, 1x JRGB - TPM: TPM 2.0 header present