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Product Overview

The ASRock B860M Pro-A is a black micro-ATX motherboard built on the Intel B860 chipset for LGA 1851 processors, covering the Core Ultra 3, 5, 7 and 9 200-series (Arrow Lake) range. It has four DDR5 slots supporting up to 256 GB, with speeds listed up to DDR5-8933 (O.C.), plus three M.2 slots and four SATA ports for storage.

With a PCIe 5.0 x16 slot, a second PCIe 4.0 x16 slot running at x4, 2.5Gb Ethernet and a 20 Gbit/s USB-C port on the rear panel, it suits a compact gaming or general-purpose Intel build. It also has six 4-pin PWM fan headers and four RGB headers, and the box includes two Wi-Fi antennas, two SATA cables and an I/O shield. A BIOS update may be needed for the newest processors.

Specification

• Manufacturer: Asrock
• Model: B860M Pro-A
• MPN: 90-MXBRR0-A0UAYZ
• EAN: 4711581490291
• Socket: LGA 1851
• Chipset: Intel B860
• Form factor: Micro-ATX (244 x 244 mm)
• Memory: 4x DDR5 DIMM, dual channel, up to 256 GB
• Supported memory speeds: DDR5-4400 to 6400, up to 8933 (O.C.)
• Expansion slots: 1x PCIe 5.0 x16, 1x PCIe 4.0 x16 (x4 lanes)
• M.2 slots: 3x M.2 (Key M, PCIe, 30-80 mm)
• SATA ports: 4x SATA 6 Gb/s, RAID 0/1/5/10
• Rear USB ports: 1x USB-C 3.2 Gen 2×2 (20 Gbit/s), 3x USB-A 3.2 Gen 1, 2x USB-A 2.0
• Video outputs: 1x HDMI, 1x DisplayPort (CPU with integrated graphics required)
• LAN: 2.5Gb Ethernet (Dragon RTL8125BG)
• Audio: Realtek ALC897 7.1 Surround Sound
• Fan and lighting headers: 6x 4-pin PWM fan, 1x RGB, 3x addressable RGB
• Power connectors: 24-pin + 8-pin + 4-pin ATX12V
• Included accessories: 2x SATA cables, I/O shield, 2x Wi-Fi antennas
• Colour: Black

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