

MSI PRO B840M-B Micro-ATX
by MSI
- Platform
- AMD
- Socket Type
- AM5
- Form Factor
- Micro-ATX
- RAM Type
- DDR5
Hardware specification sheet and editorial reference from the Forge PC component database.

Overview
The MSI PRO B840M-B is a Micro-ATX motherboard designed for AMD processors, offering a robust platform for building reliable systems. It supports the latest RAM technologies and provides multiple expansion slots for enhanced connectivity and performance.
Specifications
| Brand | MSI |
|---|---|
| Category | Motherboard |
| Model | PRO B840M-B |
| Manufacturer part number | PRO B840M-B |
| EAN / GTIN | 4711377360166 |
| Manufacturer | MSI |
| Platform | AMD |
| Socket Type | AM5 |
| Form Factor | Micro-ATX |
| RAM Type | DDR5 |
| RAM Slot Count | 2 |
| Max RAM Capacity | 64GB |
| Multi-GPU Support | No |
| RAID Support | No |
| Ethernet Port Speed | 1 GbE |
| Audio Channel Support | 7.1 |
| CPU Fan Headers | 1 |
| System Fan Headers | 2 |
| Dimensions | 28 × 26 × 7 mm |
| Weight | 0.97 kg |

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