MSI B840 Gaming Plus Wifi DDR5 AMD Motherboard

The MSI B840 Gaming Plus WiFi is an ATX-form-factor motherboard built on the AMD B840 chipset and Socket AM5 platform, designed to support AMD Ryzen 9000, 8000, and 7000 series desktop processors. It pairs modern connectivity standards with MSI's exclusive EZ DIY assembly features, making it a practical choice for both new builds and system upgrades targeting AMD's current-generation ecosystem. At the heart of the board's connectivity is Wi-Fi 7 (802.11be), pre-installed in the M.2 Key-E slot. The wireless module supports tri-band operation across 2.4 GHz, 5 GHz, and 6 GHz bands with channel widths up to 320 MHz, delivering theoretical wireless speeds of up to 5.8 Gbps. It also supports Multi-Link Operation (MLO), 4K-QAM modulation, and MU-MIMO TX/RX. Bluetooth 5.4 is included alongside the wireless module. Wired networking is handled by a 2.5G LAN controller with MSI's AI LAN Manager software, which automatically classifies and prioritises latency-sensitive applications such as online games, and lets users customise per-application bandwidth allocation. Memory support spans four DDR5 UDIMM slots with a maximum capacity of 256 GB. Under JEDEC specifications, supported speeds range from 4800 to 5600 MT/s. With overclocking and AMD EXPO profiles enabled, Ryzen 9000 series processors can reach DDR5-8000+ MT/s in a 1DPC 1R configuration. The board supports Dual-Channel mode, AMD EXPO, non-ECC unbuffered memory, and CUDIMM in Clock Driver bypass mode. Storage options include two M.2 slots — both sourced from the CPU and supporting PCIe 4.0 x4 with Ryzen 9000 and 7000 series processors — plus four SATA 6Gbps ports. RAID 0 and RAID 1 are supported for M.2 NVMe devices. The primary PCIe x16 slot (PCI_E1) operates at PCIe 4.0 x16 bandwidth for Ryzen 9000 and 7000 series CPUs. Four additional PCIe slots from the chipset provide supplementary expansion at PCIe 3.0 speeds. USB connectivity is comprehensive, with rear-panel ports including 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, and 1x USB 10Gbps Type-C. Front-panel headers add a further 4x USB 2.0, 2x USB 5Gbps Type-A, and 1x USB 5Gbps Type-C. Audio is delivered through a Realtek ALC897 codec with 7.1-channel High Definition Audio output and MSI's Isolated Analogy Structure for the audio connectors, which physically separates the external metal framework from the internal PCB layout to reduce interference. For builders, MSI's EZ M.2 Shield Frozr II and EZ M.2 CLIP II allow tool-free M.2 SSD installation and removal. The EZ PCIe Clip II on the primary slot enables single-finger graphics card removal. The power delivery section uses a Direct 7+2+1 phase VRM design with an 8-pin CPU power connector and MSI's Core Boost technology. RGB connectivity includes two JARGB_V2 addressable RGB headers and one standard JRGB header. Onboard video output is provided via a single HDMI 2.1 port supporting up to 4K 60Hz resolution for processors with integrated graphics. Verified Specifications: - Chipset: AMD B840 - Socket: AM5 - CPU Support: AMD Ryzen 9000 / 8000 / 7000 series desktop processors - Memory: 4x DDR5 UDIMM; max 256 GB; DDR5-4800 to 5600 (JEDEC); up to DDR5-8000+ OC (1DPC 1R, Ryzen 9000) - M.2 Slots: 2x PCIe 4.0 x4 (CPU) - SATA: 4x SATA 6Gbps - PCIe: 1x PCIe 4.0 x16 (CPU), 4x PCIe 3.0 (Chipset) - Wireless: Wi-Fi 7 (802.11be), 2.4/5/6 GHz, up to 5.8 Gbps, MU-MIMO, MLO, 4K-QAM - Bluetooth: 5.4 - LAN: 2.5G - Audio: Realtek ALC897, 7.1-channel HD Audio - Display: 1x HDMI 2.1 (4K 60Hz) - USB Rear: 4x USB 2.0, 2x USB 5Gbps Type-A, 1x USB 10Gbps Type-A, 1x USB 10Gbps Type-C - VRM: 7+2+1 phase, 8-pin CPU power - RGB: 2x JARGB_V2, 1x JRGB - TPM: TPM 2.0 header