MSI PRO B840M-B AM5 DDR5 Motherboard MATX

Introducing the MSI PRO B840M-B AM5 DDR5 Motherboard MATX — a purpose-built platform that balances professional-grade features with compact, reliable design. Crafted by MSI and identified as MPN PROB840MB, this Micro ATX board brings AM5 socket compatibility and the AMD B840 chipset to small-form-factor builds, enabling support for AMD Ryzen™ 9000, 8000 and 7000 series processors. Engineered for productivity, content creation, gaming and AI workloads, the PRO B840M-B leverages DDR5 memory, PCIe 4.0 M.2 performance, a front Type-C port and robust connectivity to deliver a focused foundation for modern systems.

Benefits

• Enhanced productivity: Fast memory support and modern processor compatibility accelerate multitasking, large datasets and professional applications.
• Superior responsiveness for gaming and creative work: PCIe 4.0 M.2 storage and high-memory bandwidth reduce load times and improve application responsiveness.
• Future-ready platform: AM5 socket and DDR5 memory support offer upgrade paths that extend system longevity and performance headroom.
• Reliable, high-speed networking: Built-in Realtek® 8125D 2.5G LAN ensures smoother online collaboration, streaming and competitive gaming.
• Compact flexibility: Micro ATX form factor and thoughtful layout let you build a powerful system in smaller chassis without sacrificing expandability.
• Flexible storage and redundancy options: Multiple M.2 slots, SATA ports and RAID capabilities let you optimize for speed, capacity or data protection.

Key features

• Feature — AM5 Socket & AMD B840 Chipset: Native support for the latest AMD Ryzen™ desktop processors (9000/8000/7000 series) on the AM5 platform, giving you multi-core performance for demanding workloads while leveraging MSI’s engineered board design (MPN: PROB840MB).
• Feature — High-performance DDR5 Memory: Two DDR5 DIMM slots supporting up to 128GB of memory and speeds from JEDEC 4800–5600 MT/s up to DDR5 8000 MT/s (OC), enabling rapid multitasking, large project handling and smoother content creation.
• Feature — Advanced Storage & RAID Support: Dual M.2 sockets (PCIe 4.0 capable) plus four SATA 6Gb/s ports provide versatile storage configurations. Hardware RAID support includes RAID 0, 1 and 10 for SATA and RAID 0/1 for M.2 NVMe, so you can prioritize speed, redundancy or a hybrid approach. Convenient EZ M.2/PCIe Clip II mechanisms simplify installation and maintenance.
• Feature — Modern Connectivity & Audio: Front Type-C and rear USB 3.2 Gen 2 Type-C/Type-A ports deliver fast external device throughput. Networking is handled by Realtek® 8125D 2.5G LAN for low-latency transfers, while onboard Realtek® ALC897 audio delivers clear, reliable sound for meetings, media and gaming.
• Feature — Compact Expansion & Thoughtful Layout: Micro ATX form factor (226 mm x 243.84 mm) with 1x PCIe x16 and 1x PCIe x1 slots provides room for discrete GPUs and expansion cards in space-conscious builds. Integrated graphics support means basic display output is available without a dedicated GPU, and intelligent layout features make assembly and upgrades straightforward.

Summary

The MSI PRO B840M-B AM5 DDR5 Motherboard MATX is a concentrated blend of performance, connectivity and practicality, designed to bring AM5 power to compact systems. Whether you're assembling a professional workstation, a disciplined gaming rig, or a versatile home studio PC, this board equips you with fast DDR5 memory support, PCIe 4.0 storage, modern I/O and reliable networking. With its Micro ATX footprint and MSI engineering touches like easy-install clips and optimized component placement, the PRO B840M-B is an ideal foundation for builders who demand efficiency, expandability and real-world performance in a small package. MPN PROB840MB — built to drive productivity and deliver the modern features your next build requires.