The ASUS PRIME B840M-R is a Micro ATX motherboard for AMD Ryzen 7000, 8000 and 9000 series processors on Socket AM5. It suits a compact, value-focused desktop build with DDR5 memory, fast M.2 storage and display outputs for processors with built-in graphics.

Key features

• AMD B840 chipset, Socket AM5
• 2 x DDR5 DIMM slots, dual-channel, up to 128GB and up to 7600MT/s (OC)
• 1 x PCIe 4.0 x16 and 1 x PCIe 3.0 x1 slot
• 2 x M.2 slots and 4 x SATA 6Gb/s ports, RAID 0, 1, 5, 10
• Realtek 1Gb Ethernet and 7.1-channel audio
• HDMI and DisplayPort outputs, 4 x USB 3.2 Gen 1 and 2 x USB 2.0 on the rear

Compatibility

For AMD Ryzen 7000, 8000 and 9000 series processors. HDMI and DisplayPort work only with a processor that has built-in graphics. There is no Wi-Fi on board. Check ASUS's CPU support list for BIOS needs before fitting a newer processor.

Specifications