ASRock B860M PRO-A Intel B860 Micro ATX Motherboard

The ASRock B860M PRO-A delivers reliable performance and enhanced stability for Intel Core Ultra Processors (Series 2) with LGA1851 socket support. This Micro ATX motherboard combines robust power delivery, high-speed connectivity, and efficient thermal management for daily computing and productivity workloads.

Advanced Power Delivery and Memory Support

Built with a 10+1+1+1+1 power phase design featuring Dr.MOS technology, the B860M PRO-A ensures stable power delivery to the CPU, VCore, GT, and SA components. The 6-layer PCB construction provides clean signal traces and optimized power distribution for enhanced reliability. Four DDR5 DIMM slots support dual-channel configurations up to 8666MHz (OC) with Intel XMP 3.0 and AMD EXPO profiles, accommodating up to 256GB of system memory.

High-Speed Storage and Expansion

Storage flexibility comes from three M.2 slots and four SATA III ports. The primary M.2_1 slot supports PCIe 5.0 x4 for next-generation SSDs with 128Gb/s transfer speeds, while two additional Hyper M.2 slots provide PCIe 4.0 x4 connectivity. Expansion options include one PCIe 5.0 x16 slot with reinforced steel construction and one PCIe 4.0 x4 slot for additional peripherals.

Comprehensive Connectivity

Networking is handled by Realtek Dragon 2.5Gb/s LAN, delivering 2.5X the bandwidth of standard gigabit Ethernet. The rear I/O panel features USB 3.2 Gen2x2 Type-C (20Gbps), three USB 3.2 Gen1 Type-A ports, and two USB 2.0 ports. Front panel support includes USB 3.2 Gen1 Type-C and additional USB 3.2 Gen1 and USB 2.0 headers. Display outputs include HDMI and DisplayPort 1.4 for integrated graphics configurations.

Efficient Cooling and Audio

Aluminum heatsinks manage thermal loads during sustained workloads, while multiple fan headers support both PWM and DC modes. The Fan-Tastic Tuning utility enables automatic fan curve optimization for balanced cooling and noise levels. Realtek ALC897 codec provides 7.1-channel HD audio through rear panel jacks.

User-Friendly Features

BIOS Flashback functionality allows BIOS updates using only a USB drive and power supply, without requiring CPU, RAM, or other components. Auto Driver Installer pre-loads LAN drivers for simplified initial setup. Polychrome RGB headers and addressable RGB headers support customizable lighting effects with compatible LED devices and SignalRGB integration.

The ASRock B860M PRO-A includes I/O shield, two SATA data cables, and M.2 mounting hardware. Backed by a 3-year replacement warranty, this motherboard provides a solid foundation for Intel LGA1851 platform builds focused on stability and everyday performance.