MB B860 S1851 MATX/B860M Max Gaming AX Asus

CPU, chipset and memory

• Socket LGA 1851 with Intel B860 chipset, compatible with Intel Core Ultra Arrow Lake-S (including Series 2) and ready for "AI-ready" PCs with NPU on CPU.

• 4 DDR5 DIMM slots, up to 256 GB dual-channel, supporting frequencies from DDR5-4800 up to 8666+ MT/s (OC), with Intel XMP and ASUS Enhanced Memory Profile III (AEMP III) support for optimised memory profiles.

Expansion, storage and networking

• Graphics and expansion:

  • 1× PCIe 5.0 x16 (SafeSlot-enforced) for the main GPU.

  • 3× physical PCIe 4.0 x16 (2× hardwired x1, 1× x4) for expansion cards (capture, additional NVMe, etc.).

• Storage:

  • 1× M.2 PCIe 5.0 x4 for ultra-fast SSDs.

  • 2× M.2 PCIe 4.0 (one x4, one x2).

  • 4× SATA 6 Gb/s ports, with RAID 0/1/5/10 support.

• Network and wireless: 1× 2.5 GbE LAN (Realtek) + Wi-Fi 6 (802.11ax) + Bluetooth 5.3, covering both fast wired and modern wireless.

Rear connectivity and headers.

• Rear panel:

  • 1× DisplayPort (for CPU iGPU).

  • 1× USB-C 3.2, 1× USB 3.1, 4× USB 3.0, 4× USB 2.0.

  • 1× RJ-45 2.5 GbE, 3× 7.1 audio jack, 2× SMA connectors for Wi-Fi antennas.

• Internal:

  • 2× USB 3.0 headers, 6× USB 2.0, 1× internal USB-C (USB 3.1).

  • 3× addressable ARGB connectors, front audio header, sensors, etc., very useful for setups with lots of lighting and ARGB fans.

Power, VRM and gaming focus

• 6+1+1+1+1+1-phase VRM (80A) with generous heatsinks, designed to keep high-power Core Ultra CPUs stable under sustained loads.

• Integration with the ASUS ecosystem (AI Advisor, Fan Xpert, Armoury Crate), offering fan control, power profiles and tools geared towards gaming and AI tasks.