Build a fast, future-ready rig with the MSI B840 micro ATX AM5 motherboard, designed for Ryzen 7000, 8000 and 9000 series processors. Featuring 4x DDR5 DIMM slots supporting up to 256GB DDR5-6600 OC, it delivers insane bandwidth for high-FPS gaming and multitasking. Enjoy dual M.2 PCIe, 4x SATA III, and PCIe x16 for powerful GPUs. Connectivity includes 2.5G LAN (Realtek RTL8125), Wi-Fi 6, Bluetooth, HDMI 2.1, and plenty of USB 3.2 Gen1/Gen2 & USB-C ports. With 8-channel audio, this MSI AM5 board is perfect for compact, high-end gaming PC builds.
MSI B840M Gaming Plus WIFI6E AM5, AMD B840, mATX
| Form factor |
Micro ATX (mATX) |
| Socket | AM5 |
| Chipset | AMD B840 |
| Mainboard features |
Front panel audio connector |
| Operating system compatibility | Windows |
| BIOS type | UEFI AMI |
| Wireless transmission | Bluetooth, Wi-Fi |
| Wi-Fi standard |
Wi-Fi 1 / 802.11bi, Wi-Fi 2 / 802.11a, Wi-Fi 3 / 802.11gi, Wi-Fi 4 / 802.11ni, Wi-Fi 5 / 802.11aci, Wi-Fi 6 / 802.11ax |
| Processor family |
Ryzen 7th Gen, Ryzen 8th Gen, Ryzen 9th Gen |
| Memory form factor | DIMM |
| Number of memory modules (RAM) | 4 x |
| Max. memory (RAM) | 256 GB |
| Memory chip |
DDR5-5200, DDR5-5600 |
| Max. RAM OC | 6600 MHz |
| Supported memory speed | 6600 MHz |
| Memory type | DDR5 RAM |
| RAM buffer | Unbuffered |
| Video connections | HDMI (1x) |
| Video connection version | HDMI 2.1 |
| Network connections |
RJ45 2.5 Gigabit Ethernet (1x) |
| Ethernet controller brand | Realtek |
| Ethernet controller |
Realtek RTL8125 |
| Max. port speed | 2.50 Gbit/s |
| Chip | Realtek ALC897 |
| Audio channel | 8.0 Channel |
| RAID configuration | 36535 |
| Internal connection options |
M.2 PCIe (2x), S-ATA III (4x) |
| Expansion slot |
PCI Express x16 (1x), PCI Express x4 (1x) |
| PCI express version (max.) | 4 |
| Number of fan connector | 1 |
| USB ports | USB-A, USB-C |
| Exact USB ports |
USB-A 2.0 (4x), USB-A 3.2 Gen 1 (2x), USB-A 3.2 Gen 2 (1x), USB-C 3.2 Gen 2 (1x) |
| Length | 243.80 mm |
| Width | 243.80 mm |
| Weight | 1266 g |
