MSI Pro B840M-B - AMD Ryzen 7000/8000 Series Motherboard arrives as a compact and capable micro-ATX mainboard designed for modern AMD Socket AM5 processors.

This motherboard is built around the AMD B840 chipset and supports AMD Ryzen 7000, 8000 and even 9000 Series processors, offering broad compatibility for current and future CPU upgrades. It uses the Socket AM5 interface to ensure you can take advantage of the latest Zen architectures.

Memory support is modern and fast, with two DIMM slots for DDR5-SDRAM in dual-channel configuration and a maximum capacity of 128 GB. The board accepts DDR5 speeds up to 8000 MHz (supported speeds include 4800, 5600 and up to 8000 MHz) to suit both productivity and gaming workloads.

Storage flexibility is strong thanks to two M.2 slots (both up to 2280 and PCIe 4.0 capable) plus four SATA III ports and support for up to six drives in total. Hardware RAID (0, 1, 10) is supported for users who need redundancy or higher performance arrays.

Connectivity covers both everyday and advanced needs: a 2.5 Gigabit Ethernet port driven by the Realtek RTL8125D, HDMI 2.1 output for discrete GPU-less displays, multiple USB ports (USB 2.0, USB 3.2 Gen1 and Gen2) and a suite of headers including three RGB LED pin headers, multiple fan connectors and a water pump header for cooling setups.

Although it does not include onboard graphics or Wi‑Fi, the MSI Pro B840M-B offers two PCIe x16 slots and robust audio via the Realtek ALC897 codec with 7.1-channel output, making it suitable for multimedia systems and light workstations.

Typical use cases include a compact office PC or home workstation where high memory bandwidth, fast NVMe storage and reliable networking are priorities, a small gaming rig using a discrete GPU, or a media server using RAIDed disks for data protection.

Key selling points include AM5 support for Ryzen 7000/8000/9000 CPUs, DDR5 up to 8000 MHz, dual M.2 PCIe 4.0 slots, 2.5 Gb Ethernet, and a micro-ATX form factor that balances expandability and case compatibility.