Description

MSI PRO B840M-B

The MSI PRO B840M-B is a practical AMD motherboard designed for modern gaming PCs, productivity systems, and everyday desktops. It combines AM5 processor support, DDR5 memory, PCIe 4.0, and 2.5G networking in a compact Micro-ATX design. Therefore, it is a strong choice for users who want modern features without needing a full-size motherboard.

The motherboard uses the AMD B840 chipset with the AM5 socket. It supports AMD Ryzen 9000, 8000, and 7000 Series desktop processors. In addition, it has two DDR5 memory slots supporting up to 128GB and speeds up to 8000+ MT/s through overclocking. AMD EXPO support makes memory tuning easier.

For graphics and storage, the PRO B840M-B provides a PCIe 4.0 x16 slot for a dedicated graphics card. It also includes two PCIe 4.0 x4 M.2 slots and four SATA 6Gb/s ports. As a result, you can install fast NVMe storage while keeping additional storage options available.

Networking is another key feature. The motherboard includes Realtek 2.5G LAN, which provides fast wired connectivity for gaming, file transfers, and streaming. Furthermore, the front USB 5Gbps Type-C connection offers convenient support for newer devices.

MSI also includes useful features such as EZ M.2 Clip II, EZ PCIe Clip II, Flash BIOS Button, Clear CMOS Button, and EZ Debug LED. These features make installation, upgrades, and troubleshooting easier. Overall, the MSI PRO B840M-B offers a balanced platform for a modern AMD AM5 PC.

Key Specifications

• Chipset: AMD B840
• CPU Support: AMD Ryzen 9000 / 8000 / 7000 Series
• Socket: AM5
• Memory: 2 × DDR5, up to 128GB, up to 8000+ MT/s (OC)
• Expansion: 1 × PCIe 4.0 x16, 1 × PCIe 3.0 x1
• Storage: 2 × M.2 PCIe 4.0 x4, 4 × SATA 6Gb/s
• Networking: Realtek 2.5G LAN
• USB: Front USB 5Gbps Type-C
• Audio: Realtek ALC897 7.1-Channel HD Audio
• Form Factor: Micro-ATX (mATX)