MSI PRO B840M-B AM5 DDR5 Micro-ATX Motherboard
The MSI PRO B840M-B is a Micro-ATX motherboard on the AMD B840 chipset for the AM5 socket, positioned as a ready-for-AI-PC foundation for Ryzen 9000, 8000 and 7000 Series processors. Its DDR5 support reaches high overclocked speeds, dual Gen4 M.2 slots cover fast storage, and a front Type-C port plus Flash BIOS Button suit modern compact builds for work and gaming.
Key Specifications
- Socket AM5 with AMD B840 chipset in a Micro-ATX form factor
- 2 DDR5 UDIMM slots supporting up to 128GB, with DDR5 speeds up to 8000 MHz by overclocking for Ryzen 9000 Series processors and AMD EXPO support
- 1 PCIe 4.0 x16 slot, supporting x16 for Ryzen 9000 and 7000 Series processors, x8 for Ryzen 8700, 8600 and 8400 Series processors, and x4 for Ryzen 8500 and 8300 Series processors, plus 1 PCIe 3.0 x1 slot
- 2 M.2 slots supporting PCIe 4.0 x4 for 2280 and 2260 devices, plus 4 SATA 6Gbps ports, with RAID 0, RAID 1 and RAID 10 for SATA storage and RAID 0 and RAID 1 for M.2 NVMe storage
- Realtek 8125D 2.5G LAN and Realtek ALC897 codec with 7.1-channel high definition audio
- HDMI 2.1 output supporting 4K at 60Hz and VGA output, available only on processors featuring integrated graphics
- Rear USB: 4 USB 5Gbps Type-A ports and 2 USB 2.0 ports; front headers add 2 USB 5Gbps Type-A ports, 1 USB 5Gbps Type-C port and 4 USB 2.0 ports
- 4 EZ Debug LEDs, 1 EZ Memory Detection LED, 3 addressable V2 RGB LED connectors, 1 RGB LED connector, Clear CMOS Button and Flash BIOS Button
Direct 7+2+1 Power System
The Direct 7+2+1 Power System with P-PAK, an 8-pin CPU power connector, Core Boost and Memory Boost delivers ultra performance for Ryzen 9000 Series processors, while a 6-layer PCB made by 2oz thickened copper supports stable power delivery. EZ DIY features including EZ M.2 Clip II and EZ PCIe Clip II simplify drive and graphics card installation, and the Lightning Gen 4 x4 M.2 slots keep storage transfers fast.
- Start with a Ryzen 9000 Series processor and DDR5 memory overclocked up to 8000 MHz.
- Install two PCIe 4.0 NVMe SSDs across the dual M.2 slots for operating system and game libraries.
- Use the Flash BIOS Button to update firmware without a full system assembly, and the front Type-C port for modern peripherals.
