MSI B840M Gaming Plus WIFI6E M-ATX Motherboard
The MSI B840M GAMING PLUS WIFI6E Micro-ATX Motherboard is designed for AMD Ryzen 9000, 8000 and 7000 Series processors on the AM5 platform. It combines DDR5 memory up to 8000+ MT/s, PCIe 4.0 graphics, dual PCIe 4.0 M.2 storage, Wi-Fi 6E and 2.5GbE LAN in a compact design. With a 7+2+1 phase power system, advanced cooling and EZ DIY features, it is ideal for compact gaming and high-performance PC builds.
MSI B840M Gaming Plus WIFI6E M-ATX Motherboard
Features
- AMD B840 Chipset: Supports AMD Ryzen™ 9000, 8000 and 7000 Series desktop processors with the AM5 socket.
- Micro-ATX Form Factor: Compact 243.84 × 243.84mm design is ideal for space-efficient gaming and performance PC builds.
- 7+2+1 Phase Direct Power: Includes an 8-pin CPU power connector, Core Boost and Memory Boost for stable processor and memory performance.
- High-Speed DDR5 Memory: Supports up to 256GB DDR5 with speeds up to 8000+ MT/s (OC) and AMD EXPO support.
- PCIe 4.0 Graphics Support: The primary PCIe 4.0 x16 slot provides high-speed connectivity for modern graphics cards.
- Dual PCIe 4.0 M.2 Storage: Two M.2 slots support PCIe 4.0 x4 NVMe SSDs for fast boot times and application loading.
- Wi-Fi 6E Connectivity: Supports 2.4GHz, 5GHz and 6GHz wireless bands with speeds up to 2.4Gbps.
- 2.5G LAN: Realtek 8125D 2.5Gb Ethernet provides fast and stable wired networking for gaming and data transfers.
- Frozr Guard & EZ DIY: Extended heatsinks, 7W/mK thermal pads, M.2 Shield Frozr II and EZ installation features improve cooling and simplify PC building.
Specifications
| Brand | MSI |
| Model | B840M GAMING PLUS WIFI6E |
| Form Factor | Micro-ATX |
| Dimensions | 243.84 × 243.84 mm |
| Chipset | AMD B840 |
| CPU Socket | AM5 |
| CPU Support | AMD Ryzen™ 9000 / 8000 / 7000 Series |
| Memory Type | DDR5 UDIMM |
| Memory Slots | 4 × DDR5 DIMM |
| Maximum Memory | 256GB |
| Memory Speed | DDR5-8000+ MT/s (OC) |
| Memory Support | AMD EXPO, Dual Channel, Non-ECC Unbuffered, CUDIMM |
| Primary PCIe Slot | PCIe 4.0 x16 |
| Secondary PCIe Slot | PCIe 3.0 x4 |
| M.2 Slots | 2 × M.2 |
| M.2 Interface | PCIe 4.0 x4 |
| M.2 Support | 2260 / 2280 |
| SATA Ports | 4 × SATA 6Gb/s |
| LAN | Realtek 8125D 2.5GbE |
| Wireless | Wi-Fi 6E |
| Wi-Fi Bands | 2.4GHz / 5GHz / 6GHz |
| Wi-Fi Speed | Up to 2.4Gbps |
| Bluetooth | Bluetooth 5.3 |
| Audio Codec | Realtek ALC897 |
| Audio | 7.1-Channel High Definition Audio |
| HDMI | HDMI 2.1, up to 4K 60Hz |
| Rear USB | USB 2.0, USB 5Gbps Type-A, USB 10Gbps Type-A & Type-C |
| Front USB | USB 2.0, USB 5Gbps Type-A & Type-C |
| Power Design | 7+2+1 Phase Direct CPU Power |
| PCB | 6-Layer PCB, 2oz Thickened Copper |
| Cooling | Extended Heatsink, 7W/mK MOSFET Thermal Pads, M.2 Shield Frozr II |
| BIOS Features | Flash BIOS Button, Clear CMOS, EZ Debug LED |
| Operating System | Windows 11 64-bit |



