ASRock B860 PRO-A ATX Motherboard - Intel LGA1851 Platform

The ASRock B860 PRO-A delivers reliable performance and stability for Intel Core Ultra Processors (Series 2) with the LGA1851 socket. Engineered for enhanced durability and efficiency, this ATX motherboard provides a streamlined platform for daily computing, content creation, and gaming builds.

Power Delivery and Memory Support

Built with a 10+1+1+1+1 power phase design featuring Dr.MOS technology for VCore, GT, and SA, the B860 PRO-A ensures stable power delivery to your processor. Four DDR5 DIMM slots support dual-channel memory configurations up to 8666MHz (OC), with Intel XMP and AMD EXPO profile support for easy memory overclocking. Maximum memory capacity reaches 256GB, accommodating demanding workloads and future upgrades.

PCIe 5.0 and Storage Expansion

The motherboard features one PCIe 5.0 x16 slot for next-generation graphics cards and one PCIe 4.0 x16 slot (x4 mode) for additional expansion. Storage options include three M.2 slots: one Blazing M.2 with PCIe Gen5 x4 support delivering 128Gb/s transfer speeds, and two Hyper M.2 slots with PCIe Gen4 x4 capability. Four SATA III ports provide traditional storage connectivity with RAID 0, 1, 5, and 10 support.

Connectivity and I/O

Rear I/O includes one USB 3.2 Gen2x2 Type-C port delivering 20Gbps transfer rates, six USB 3.2 Gen1 Type-A ports, and two USB 2.0 ports. Graphics output options include HDMI and DisplayPort 1.4 for dual display configurations. Realtek 2.5G LAN provides enhanced networking performance with 2.5X the bandwidth of standard gigabit Ethernet. Realtek ALC897 audio codec delivers 7.1 channel HD audio output.

Cooling and Thermal Management

Aluminum heatsinks manage thermal performance across critical components, ensuring system stability during intensive workloads. Multiple fan headers support both PWM and DC modes, with automatic detection and Fan-Tastic Tuning software enabling precise fan curve adjustments for optimal cooling and noise reduction.

DIY-Friendly Features

BIOS Flashback functionality allows BIOS updates using only a USB drive and power supply—no CPU or RAM required. Reinforced steel PCIe 5.0 slots provide structural support for heavy graphics cards. Auto Driver Installer with pre-installed LAN drivers simplifies initial system setup. Polychrome RGB headers and addressable RGB headers offer customization options with SignalRGB compatibility for unified lighting control across compatible devices.

The ASRock B860 PRO-A combines essential features with forward-looking connectivity, making it suitable for Intel Core Ultra Series 2 processor builds that prioritize stability, expandability, and value.