Price Notice: Prices are not final. Kindly confirm price and stock before ordering.
| Brand | MSI |
| Model | PRO B840M-B DDR5 AM5 Micro-ATX Motherboard |
| Chipset | AMD B840 |
| CPU Socket | AM5 |
| Form Factor | Micro-ATX |
| Supported CPUs | AMD Ryzen™ 9000/8000/7000 Series Desktop Processors |
| RAM Type | DDR5 |
| RAM Capacity | 128 GB |
| RAM Speed | DDR5 8000 – 5600 (OC) |
| Memory Slots | 2 x DIMM |
| PCIe Version | PCIe 4.0 |
| PCIe Slots | 1 x PCIe 4.0 x16 1 x PCIe 3.0 x1 |
| M.2 Slots | 2 x M.2 (PCIe 4.0) |
| SATA Ports | 4 x SATA III |
| Graphics Output | 1 x HDMI 2.1 1 x VGA |
| LAN | 2.5Gb Ethernet |
| Wireless Connectivity | N/A |
| Audio | Realtek ALC897 7.1 HD Audio |
| USB Ports | • Rear: 2 x USB 2.0 • Rear: 4 x USB 5Gbps Type-A • Front: 4 x USB 2.0 • Front: 2 x USB 5Gbps Type-A • Front: 1 x USB 5Gbps Type-C |
| Internal Headers | • 1 x 24-pin ATX Power • 1 x 8-pin CPU Power • 1 x CPU Fan • 2 x System Fan • 2 x Front Panel (JFP) • 1 x Chassis Intrusion (JCI) • 1 x Front Audio (JAUD) • 1 x Com Port (JCOM) • 3 x Addressable V2 RGB LED (JARGB_V2) • 1 x RGB LED (JRGB) • 1 x TPM pin header (Support TPM 2.0) • 4 x USB 2.0 ports • 2 x USB 5Gbps Type-A ports • 1 x USB 5Gbps Type-C port |
| Cooling Features | VRM Heatsinks + Smart Fan Control |
| RGB Support | Yes – Mystic Light |
| Warranty | 10 Months Local Warranty |
The MSI PRO B840M-B DDR5 AM5 Micro-ATX Motherboard is designed for productivity and efficiency, delivering solid performance for both workstations and home builds. Powered by the AMD B840 chipset and supporting AM5 socket Ryzen™ 9000/8000/7000 series processors, this motherboard ensures stable operation and reliable performance under demanding workloads. Its robust VRM design provides consistent power delivery, enabling users to fully leverage CPU capabilities and memory overclocking features.
Supporting DDR5 memory up to 128 GB across 2 DIMM slots, with speeds of DDR5 8000 – 5600 (OC), the PRO B840M-B allows for fast and responsive system performance. For storage, it includes 2 x M.2 slots (PCIe 4.0) and 4 x SATA III ports, supporting RAID 0, 1, and 10 configurations for flexible and high-speed storage setups. Graphics options include HDMI 2.1 and VGA, depending on the installed CPU.
Connectivity is comprehensive, featuring Realtek 8125D 2.5G LAN and multiple USB ports, while internal headers support RGB lighting, fan control, and expansion. Enhanced system management and monitoring are provided by EZ Debug LEDs and fan headers. The MSI PRO B840M-B DDR5 AM5 Micro-ATX Motherboard is an ideal choice for users seeking stability, upgradeability, and modern features in a compact form factor.
