ASUS PRO B860M-C-CSM - Intel B860 Motherboard for Micro ATX

ASUS PRO B860M-C-CSM - Intel B860 Motherboard for Micro ATX arrives as a professional-grade micro ATX board designed for modern Intel LGA 1851 systems and ready for Intel Core Ultra (Series 2) processors.

This ASUS PRO B860M-C-CSM supports LGA 1851 (Socket V1) processors and pairs with DDR5-SDRAM across four DIMM slots, offering dual-channel memory and up to 256 GB total system memory at speeds up to 8666 MHz (non-ECC, unbuffered, up to 64 GB per slot).

Storage flexibility is excellent with two M.2 slots (one PCIe 5.0 x4 2280 and one PCIe 4.0 2280) plus four SATA III connectors, allowing up to six drives in total and RAID support for levels 0, 1, 5 and 10 for performance and redundancy configurations.

Expansion and connectivity are balanced for compact builds: you get one PCIe x16 (Gen 5.x), one PCIe x16 (Gen 4.x) and one PCIe x1 (Gen 4.x) slot, two COM ports, TPM and a range of onboard connectors including ATX 24-pin, 8-pin EPS, multiple fan headers and front-panel audio.

Rear I/O includes HDMI 2.1 and two DisplayPort 1.4 outputs for up to 3840 x 2160 resolution, Gigabit Ethernet (RJ-45), two USB 2.0, one USB 3.2 Gen 1 Type-A and one USB 3.2 Gen 1 Type-C port, plus PS/2 support and 7.1-channel audio with line-in, mic and headphone outputs.

The board uses a passive cooling design, UEFI AMI BIOS with 256 Mbit memory, and is built in a compact 244 x 244 mm micro ATX form factor with a professional green finish. It ships with SATA cables and mounting screws to simplify installation and is compatible with Windows 10 x64 and Windows 11.

Ideal use cases include small office servers, compact workstations and business desktops that need reliable RAID storage, modern CPU support and solid I/O in a space-saving micro ATX chassis. Its mix of legacy ports (COM, PS/2) and modern features (PCIe 5.0 M.2, HDMI 2.1) make it a versatile choice for IT departments and system integrators.

Key selling points at a glance:

• Supports Intel LGA 1851 and Intel Core Ultra (Series 2)
• DDR5 up to 8666 MHz, 4 DIMMs, 256 GB max
• Dual M.2 (PCIe 5.0 + PCIe 4.0) and RAID 0/1/5/10
• Compact micro ATX with rich I/O including HDMI 2.1 and Gigabit Ethernet
• Passive cooling and enterprise-focused connectors (TPM, COM, EPS)