Youve probably spent hours tweaking settings only to watch your game lag or your PC overheat during long sessions. The frustration of unstable Wi-Fi, limited bandwidth, and a motherboard that cant keep up with a Ryzen 9000 CPU is real. MSI solves that problem with a board that combines Wi-Fi 6E, 2.5 G LAN, and a robust 7+2+1 power design, so you can game nonstop without worrying about connectivity or heat. All of this fits into a compact micro ATX form factor.
MSI B840M GAMING PLUS WIFI6E micro ATX AMD Socket AM5 Motherboard
The MSI B840M GAMING PLUS WIFI6E micro ATX AMD Socket AM5 Motherboard is built for gamers and creators who need reliable performance from AMD Ryzen 7000/8000/9000 processors. It offers DDR5 support up to 8000 MHz, dual M.2 slots with PCIe 4.0, and extensive USB and fan connectors, making it a practical foundation for a high-speed, low-latency PC build.
Benefits
- Stable Wi-Fi 6E connection eliminates lag during online play.
- 2.5 G Ethernet delivers fast, low-latency wired networking.
- Extended heatsink keeps temperatures low under heavy loads.
- 7+2+1 digital power phases sustain peak CPU performance.
- Optimized PCB ensures higher bandwidth for fast data transfer.
- EZ DIY tools simplify BIOS updates and system tuning.
Features
- Socket AM5 for latest AMD Ryzen CPUs
- DDR5-8000 MHz memory support
- PCIe 4.0 x16 slots (2)
- Dual M.2 slots with Shield Frozr
- 2.5 Gbps Realtek LAN controller
- Wi-Fi 6E and Bluetooth 5.3
- Extended heatsink and chipset cooler
- 7W/mK MOSFET thermal pads
Specifications
| Processor |
| Supported processor sockets |
Socket AM5 |
| Compatible processor series |
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket |
Socket AM5 |
| Processor manufacturer |
AMD |
| Memory |
| Maximum internal memory |
256 GB |
| Supported memory clock speed (max) |
8000 MHz |
| Supported memory clock speeds |
4800,5600,8000 MHz |
| ECC сompatibility |
Non-ECC |
| Memory channels |
Dual-channel |
| Memory slots type |
DIMM |
| Number of memory slots |
4 |
| Supported memory types |
DDR5-SDRAM |
| Storage controllers |
| RAID levels |
0, 1, 10 |
| RAID support |
Yes |
| Number of HDDs supported |
4 |
| Number of storage drives supported |
6 |
| Supported storage drive interfaces |
M.2, Micro SATA III |
| Supported storage drive types |
HDD & SSD |
| Graphics |
| On-board graphics card |
No |
| Internal I/O |
| Number of RGB LED pin headers |
3 |
| RGB LED pin header |
Yes |
| Number of water pump connectors |
1 |
| Number of chassis fan connectors |
5 |
| Number of CPU fan connectors |
1 |
| Total number of SATA connectors |
4 |
| Number of SATA Express connectors |
0 |
| Number of SATA connectors |
0 |
| Number of SATA III connectors |
4 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors |
1 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors |
2 |
| USB 2.0 connectors |
4 |
| Rear panel I/O ports |
| DVI-D ports quantity |
0 |
| HDMI version |
2.1 |
| HDMI ports quantity |
1 |
| VGA (D-Sub) ports quantity |
0 |
| Ethernet LAN (RJ-45) ports |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity |
0 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity |
0 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity |
2 |
| USB 2.0 ports quantity |
4 |
| Network |
| Bluetooth version |
5.3 |
| Bluetooth |
Yes |
| Wi-Fi standards |
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax) |
| Top Wi-Fi standard |
Wi-Fi 6E (802.11ax) |
| Wi-Fi |
Yes |
| LAN controller |
Realtek RTL8125D |
| Ethernet interface type |
2.5 Gigabit Ethernet |
| Ethernet LAN |
Yes |
| Features |
| Windows operating systems supported |
Windows 11 x64 |
| Product colour |
White |
| Audio output channels |
7.1 channels |
| Audio chip |
Realtek ALC897 |
| Motherboard chipset |
AMD B840 |
| Motherboard chipset family |
AMD |
| Motherboard form factor |
micro ATX |
| Component for |
PC |
| Expansion slots |
| 2nd M.2 highest PCI Express generation |
4.0 |
| 2nd M.2 largest key size |
2280 |
| 1st M.2 highest PCI Express generation |
4.0 |
| 1st M.2 largest key size |
2280 |
| Number of M.2 (M) slots |
2 |
| PCI Express x16 slots |
2 |
| BIOS |
| System Management BIOS (SMBIOS) version |
3.7 |
| ACPI version |
6.5 |
| BIOS memory size |
256 Mbit |
| BIOS type |
UEFI AMI |
| Weight & dimensions |
| Depth |
243.8 mm |
| Width |
243.8 mm |
| Other features |
| Maximum internal memory |
256 GB |
| mSATA ports quantity |
0 |
