The MSI PRO B840M-B motherboard supports AMD Ryzen 7000, 8000 and 9000 series processors with AM5 socket. It offers dual-channel DDR5 memory support, a maximum capacity of 128 GB and 2.5 Gigabit Ethernet connectivity.
The MSI PRO B840M-B motherboard supports AMD Ryzen 7000, 8000 and 9000 series processors with AM5 socket. It offers dual-channel DDR5 memory support, a maximum capacity of 128 GB and 2.5 Gigabit Ethernet connectivity.





The MSI PRO B840M-B motherboard supports AMD Ryzen 7000, 8000 and 9000 series processors with AM5 socket. It offers dual-channel DDR5 memory support, a maximum capacity of 128 GB and 2.5 Gigabit Ethernet connectivity.
Guarantee
24 month
Delivery from Europe in
8 - 9
business days
Compatible with AMD Ryzen 7000, 8000 and 9000 series processors with Socket AM5. Supports dual-channel DDR5 memory, maximum capacity 128 GB and 2.5 Gigabit Ethernet connection.
Processor | |
|---|---|
| Supported processor sockets | Socket AM5 |
| Compatible processor series | AMD Ryzen 7000 series, AMD Ryzen 9000 series, AMD Ryzen 8000 series |
| Processor manufacturer | AMD |
Memory | |
| Supported memory types | DDR5-SDRAM |
| Memory slot type | DIMMs |
| Memory channels | Dual channel |
| Supported memory frequencies | 8000MHz, 5600, 4800 |
| Number of memory slots | 2 |
Weight and dimensions | |
| Width | 226 mm |
| Depth | 243.8 mm |
Network | |
| Ethernet interface type | 2.5 Gigabit Ethernet |
Internal I/O | |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
| Total number of SATA connectors | 4 |
| USB 2.0 ports | 4 |
Storage controls | |
| RAID support | Yes |
| Supported storage device types | HDD and SSD |
Rear panel I/O ports | |
| Number of USB 2.0 ports | 2 |
| HDMI version | 2.1 |
Expansion slots | |
| M.2 (M) number of sockets | 2 |
| 1-o M.2 highest PCI Express generation | 4.0 |
| Height | 50mm |
| Length | 400mm |
| Weight | 1600g |
| Width | 300mm |