ASUS PRIME B850M-K Micro-ATX Gaming Motherboard | AMD B850 · Socket AM5 | DDR5 2 DIMM · up to 128GB · 8200+ MT/s OC | PCIe 5.0 x16 · M.2 PCIe 5.0 + M.2 PCIe 4.0 · 4× SATA 6Gb/s | Realtek 2.5Gb LAN | HDMI + DisplayPort | 7.1 Audio

ASUS PRIME B850M-K Micro-ATX Motherboard (Socket AM5)

Built around the AMD B850 chipset, the ASUS PRIME B850M-K gives Ryzen 9000, 8000 and 7000 series builders a clean micro-ATX foundation with PCIe 5.0 graphics and PCIe 5.0 storage, dual-channel DDR5 headroom beyond 8000 MT/s and 2.5 Gb networking for low-latency gaming. Supplied brand new and sealed in its original manufacturer packaging.

📋 Specifications

• Chipset: AMD B850
• Socket: AMD Socket AM5 — Ryzen 9000 / 8000 / 7000 Series desktop processors
• CPU power support: Up to 170W
• Form factor: micro-ATX, 24.4 cm x 22.1 cm (9.6 in x 8.7 in)
• Memory: 2 x DIMM, DDR5 (ECC and non-ECC, un-buffered), maximum 128GB, dual channel
• Memory speed: Up to 8200+ MT/s (Ryzen 9000), 9600+ MT/s (Ryzen 8000), 8000+ MT/s (Ryzen 7000) with overclocking
• Expansion: 1 x PCIe 5.0 x16 (Ryzen 9000/7000); PCIe 4.0 x16 slot in x8/x4 mode with Ryzen 8000; 1 x PCIe 4.0 x16 (x4 mode) from the B850 chipset
• M.2 storage: M.2_1 — PCIe 5.0 x4 (Ryzen 9000/7000) or PCIe 4.0 x4 (Ryzen 8000), type 2280; M.2_2 — PCIe 4.0 x4, type 2242/2260/2280
• SATA: 4 x SATA 6Gb/s ports
• LAN: Realtek 2.5Gb Ethernet
• Audio: Realtek 7.1 surround codec, 24-bit/192 kHz
• Rear I/O: 2 x USB 10Gbps Type-A, 2 x USB 5Gbps Type-A, 4 x USB 2.0, 1 x HDMI, 1 x DisplayPort, PS/2 keyboard/mouse combo, audio jacks

⚡ Key Features

• Socket AM5 support for AMD Ryzen 9000, 8000 and 7000 Series processors, with headroom for CPUs drawing up to 170W
• PCIe 5.0 x16 graphics slot on Ryzen 9000 and 7000 chips, so a next-generation GPU is never bottlenecked by the board
• PCIe 5.0 x4 primary M.2 socket for the fastest current NVMe SSDs, plus a second PCIe 4.0 x4 M.2 for a large game library
• Two DDR5 DIMM slots take up to 128GB and are validated well past 8000 MT/s with overclocking, so memory tuning is on the table
• ECC and non-ECC un-buffered DDR5 support gives the board a second life in light workstation duty
• Realtek 2.5Gb Ethernet delivers more than twice the bandwidth of standard gigabit LAN for online play and fast local transfers
• Four SATA 6Gb/s ports keep existing hard drives and SSDs in the build alongside NVMe storage
• HDMI and DisplayPort outputs drive displays directly from a Ryzen processor with integrated graphics — handy for troubleshooting or a GPU-less first boot
• Eight rear USB ports including two 10Gbps Type-A connections for fast external drives and docks
• Compact micro-ATX footprint (24.4 x 22.1 cm) fits mATX and ATX chassis alike

🛡️ SQUADRIG Assurance

• Brand new and sealed in original manufacturer packaging
• Sourced from authorised local distributors
• Checked on arrival and securely packed for delivery
• Honest listings — specifications are taken from the manufacturer's own published data

🔑 Product Details

• Brand: ASUS
• Model: PRIME B850M-K
• Condition: Brand new
• SKU: MOH-ASUS-B850MK-NEW-2109