ASRock B860 Pro-A Intel LGA1851 ATX DDR5 Motherboard

Powerful Performance and Expansion for Modern Intel Builds

The ASRock B860 Pro-A is a feature-rich ATX motherboard designed for the latest Intel Core Ultra Series 2 processors. Built around the Intel B860 chipset, it combines robust power delivery, PCIe 5.0 expansion, ultra-fast storage capabilities and advanced DDR5 memory support to create an ideal platform for gaming, content creation, professional workloads and AI-enhanced computing.

Featuring a premium 10+1+1+1+1 Dr.MOS power design, support for up to 256GB DDR5 memory, PCIe 5.0 graphics, Gen5 NVMe storage and 2.5 Gigabit networking, the B860 Pro-A delivers exceptional performance and upgrade flexibility for enthusiasts and professionals alike.

Key Features & Benefits

Supports Intel Core Ultra Processors (Series 2)

Designed for Intel's latest LGA1851 processors with support for advanced AI acceleration and next-generation computing technologies.

Premium 10+1+1+1+1 Dr.MOS Power Delivery

Robust power stages ensure clean, stable power for demanding processors and sustained workloads.

PCIe 5.0 Graphics Slot

A full-speed PCIe 5.0 x16 slot provides maximum bandwidth for the latest high-performance graphics cards.

High-Speed DDR5 Memory

Support for up to 256GB of DDR5 memory with overclocking capability up to 8666+MHz for outstanding multitasking and system responsiveness.

Triple M.2 SSD Support

Install up to three NVMe SSDs, including one ultra-fast PCIe Gen5 M.2 slot and two PCIe Gen4 M.2 slots.

Fast 2.5 Gigabit Ethernet

Integrated Dragon 2.5G LAN delivers lower latency and faster wired networking for gaming, backups and large file transfers.

USB 3.2 Gen2x2 Type-C

Enjoy transfer speeds up to 20Gbps through the rear USB-C connection.

Flexible Display Outputs

Integrated HDMI 2.1 and DisplayPort 1.4 outputs support high-resolution multi-display environments.

Advanced Cooling Support

Multiple fan and pump headers make it easy to build high-performance air or liquid-cooled systems.

BIOS Flashback Functionality

Convenient BIOS updates without the need for a fully configured system.

Technical Specifications

Processor Support

• Socket: LGA1851
• Supports Intel Core Ultra Processors (Series 2)
• Intel Hybrid Technology
• Intel Turbo Boost Max 3.0
• Intel Thermal Velocity Boost (TVB)
• Intel Adaptive Boost Technology (ABT)
• Integrated AI NPU Support

Chipset

• Intel B860

Form Factor

• ATX
• Dimensions: 305 x 244mm (12.0" x 9.6")

Power Design

• 10+1+1+1+1 Dr.MOS Power Phase Design

Memory

• 4 x DDR5 DIMM Slots
• Dual Channel DDR5 Architecture
• Maximum Capacity: 256GB
• Supports DDR5 Non-ECC Unbuffered Memory
• Memory Speeds Up To 8666+MHz (OC)
• Supports Intel XMP 3.0
• Supports CUDIMM Modules

Expansion Slots

• 1 x PCIe 5.0 x16 Slot
• 1 x PCIe 4.0 x16 Slot (x4 Mode)
• 1 x M.2 Key-E Slot for Wi-Fi/Bluetooth Module

Storage

M.2 SSD Support

• 1 x Blazing M.2 PCIe 5.0 x4 Slot
• 2 x Hyper M.2 PCIe 4.0 x4 Slots

SATA Support

• 4 x SATA III 6Gb/s Ports

RAID Support

• RAID 0
• RAID 1
• RAID 5
• RAID 10

Graphics Outputs

• 1 x HDMI 2.1
• 1 x DisplayPort 1.4
• HDMI Supports Up To 4K @ 120Hz
• DisplayPort Supports Up To 8K @ 60Hz or 5K @ 120Hz
• HDR and HDCP 2.3 Support

Audio

• Realtek ALC897 7.1 Channel HD Audio Codec

Networking

• Dragon RTL8125BG 2.5 Gigabit LAN
• 10/100/1000/2500 Mbps Support
• Dragon LAN Management Software

USB Connectivity

Rear USB Ports

• 1 x USB 3.2 Gen2x2 Type-C (20Gbps)
• 6 x USB 3.2 Gen1 Type-A
• 2 x USB 2.0

Internal USB Headers

• 1 x USB 3.2 Gen1 Type-C Front Header
• 1 x USB 3.2 Gen1 Header (2 Ports)
• 2 x USB 2.0 Headers (4 Ports)

Rear I/O Panel

• 1 x HDMI 2.1
• 1 x DisplayPort 1.4
• 1 x USB 3.2 Gen2x2 Type-C
• 6 x USB 3.2 Gen1 Type-A
• 2 x USB 2.0
• 1 x RJ-45 LAN Port
• Audio Jacks
• BIOS Flashback Button
• 2 x Wi-Fi Antenna Mounting Points

Internal Connectors

• 2 x 8-Pin CPU Power Connectors
• 1 x 24-Pin ATX Power Connector
• 1 x TPM Header
• 1 x RGB Header
• 3 x Addressable RGB Headers
• 2 x CPU Fan Headers
• 4 x Chassis Fan Headers
• 1 x AIO Pump Header
• 1 x Front Panel Audio Header

Cooling Features

• Smart Fan Speed Control
• Automatic 3-Pin and 4-Pin Fan Detection
• High-Power Fan and Pump Support

BIOS & Software

BIOS

• 256Mb AMI UEFI BIOS
• Graphical User Interface
• ASRock EZ Mode
• ASRock Instant Flash
• BIOS Flashback

Software

• ASRock Motherboard Utility (A-Tuning)
• ASRock Dragon 2.5G LAN Software
• ASRock Polychrome Sync
• ASRock Auto Driver Installer

Operating System Support

• Microsoft Windows 11 64-Bit

Certifications

• FCC Certified
• CE Certified
• ErP/EuP Ready

What's in the Box?

• ASRock B860 Pro-A Motherboard
• I/O Shield
• 2 x SATA Data Cables
• M.2 Installation Screw
• Documentation

Why Choose the ASRock B860 Pro-A?

The ASRock B860 Pro-A is an outstanding choice for builders seeking a full-size ATX motherboard with modern connectivity, robust power delivery and future-ready expansion. With support for Intel Core Ultra Series 2 processors, PCIe 5.0 graphics, Gen5 NVMe storage, DDR5 memory up to 256GB and 2.5Gb Ethernet, it provides the ideal foundation for gaming PCs, content creation systems and productivity workstations.

Its spacious ATX layout, triple M.2 storage support and comprehensive cooling capabilities allow users to build a powerful and highly upgradeable platform that is ready for today's workloads and tomorrow's technologies.