ASUS PRIME B860M-K

ASUS PRIME B860M-K
ASUS Prime series motherboards can unleash the full potential of the latest Intel® Core™ Ultra (Series 2) processors. The PRIME B860M-K board boasts a robust power design, a comprehensive cooling solution, and intelligent tuning options. It provides users and PC builders with a range of performance optimisations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the performance and connectivity needed for demanding AI applications.
Key features of the ASUS PRIME B860M-K motherboard
- Support for Intel Core Ultra (Series 2) processors with the Intel B860 chipset and advanced AI features, including AI Advisor for easy natural language communication
- Robust 6+1+1+1 phase digital power delivery with an 8-pin ProCool connector ensures stable power and consistent performance for both everyday use and demanding applications
- ASUS Enhanced Memory Profile III (AEMP III) optimises DDR5 memory performance up to 7600MHz through advanced clock driver and frequency tuning
- Two M.2 slots with support for PCIe 5.0 for transfer speeds up to 128Gb/s and PCIe 4.0 for speeds up to 64Gb/s, enabling lightning-fast system boot and application loading
- Comprehensive cooling includes VRM heatsinks, a passive chipset heatsink, thermal pads, and Fan Xpert 2+ software with auto-tuning and an extreme quiet mode
- Versatile connectivity with a Realtek 2.5Gb Ethernet port, USB 5Gb/s Type-C ports, addressable Gen 2 RGB headers, and a reinforced SafeSlot Core+ stainless steel slot
AI solutions
ASUS AI Solutions include AI Advisor, your technical expert with in-depth knowledge of PC performance. ASUS AI Advisor lets users explore the features and advanced capabilities of ASUS motherboards in a simple and straightforward way.
Stable and efficient power
Stable power is crucial for unlocking the maximum performance of Intel® Core™ Ultra (Series 2) processors. The PRIME B860M-K has 6+1+1+1 power stages with separate MOSFETs, which ensures efficient and stable power delivery to Intel® processors and consistent performance for everyday use. A proprietary 8-pin connector improves the connection to the power supply. Optimise power delivery with processor, lighting, and fan settings. Real-time voltage regulation.
AEMP III for maximum DDR5 performance
ASUS Enhanced Memory Profile III (AEMP III) is an advanced firmware feature that enables users to achieve unparalleled memory performance with top-tier CUDIMM memory. Through a two-phase comprehensive tuning process, AEMP III first optimises the clock driver and then the memory frequency. The result is the best balance between performance and stability, even at top speeds of DDR5-7600 or higher.
DIMM fit
DIMM Fit is an exclusive ASUS BIOS feature that precisely analyses individual memory modules to optimise performance and detect potential issues. It offers maximum efficiency, compatibility, and system stability. Whether you're an overclocker seeking the highest performance, a competitive gamer striving for the fastest response times, or a content creator who prioritises absolute stability, DIMM Fit provides optimisations tailored to your needs and hardware configuration.
Two M.2 slots
The PRIME B860M-K offers a total of two M.2 slots, one of which supports data transfer speeds of up to 128Gb/s via PCIe 5.0, and the other supports speeds of 64Gb/s via PCIe 4.0. This enables faster system boot-up and application loading times on OS or application drives.
Comprehensive cooling solution
The PRIME B860M-K motherboard is equipped with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your build stays cool and stable under intense workloads. The ASUS Fan Xpert 2+ software provides comprehensive control over your fans. Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode, which reduces chassis fan speeds below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
Versatile connectivity
This motherboard offers versatile connectivity options, including PCIe 5.0 M.2 support, a PCIe 4.0 slot, and an arsenal of USB ports, including a Type-C® connection. Realtek 2.5Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfer. A suite of USB ports supports high-end rigs loaded with peripherals, including a front-panel USB Type-C® connector with fast USB 5Gb/s for transfer speeds of up to 5Gb/s.
Personalisation and lighting control
The PRIME B860M-K enhances the user experience in every area, from simplifying BIOS setting adjustments to customisable RGB lighting control, giving your build a unique look. The UEFI interface provides easy-to-use configuration options for PC beginners and advanced features for seasoned builders. Simplify driver management with automatic detection, installation, and one-click updates for smooth and efficient system performance. Customise Aura Sync RGB and control ASUS devices. Includes product registration and updates. Complete RGB lighting control for enthusiast builds, ensuring easy synchronisation with compatible hardware. Two addressable Gen 2 headers detect the number of LEDs on compatible RGB devices and automatically adjust lighting effects accordingly.
DIY-friendly features
The PRIME B860M-K motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making it easier and more enjoyable to build it yourself. The Q-LED Core display produces colour-coded lights during the Power-On Self-Test (POST) that can help users troubleshoot potential problems. SafeSlot Core+ is a one-piece stainless-steel brace that protects the slot from damage. The metal cover is securely fastened to the slot with hooks, and the entire assembly is firmly anchored to the PCB with reinforced solder points, providing a secure foundation for heavy graphics cards.
Ports
Storage
- SATA III: 4
- M.2: 2
- M.2 Slot 1 - M.2 PCI-E NVMe Gen5
- M.2 Slot 2 - M.2 PCI-E NVMe Gen4
USB ports
- Internal USB 2.0: 3
- Internal USB 3.2 Gen 1: 2
- Internal USB-C 3.2 Gen 1: 1
- Rear USB 2.0: 2
- Rear USB 3.2 Gen 1: 2
- Rear USB 3.2 Gen 2: 1
Graphics
- HDMI 2.1
- DisplayPort 1.4
- Graphics outputs: HDMI, DisplayPort
Audio
- Channels: 8.0
- Internal connectors: S/PDIF
Other
- Network: RJ-45 (LAN) 2.5Gbps
- Internal: RGB LED Header, TPM header, COM header
Specifications
Format & functions
Memory
Advanced parameters
Connectors
Compatibility
Colour
ASUSTek COMPUTER INC. 1F.,No.15, Lide Rd., Beitou Dist., Taipei City 112 Tel: +886-2-2894-3447 Tel: +886-2-2890-7798 https://gr.asus.com/ProductSafety ASUS COMPUTER GmbH Harkortstrasse 21-23 40880 Ratingen Germany, Europe Email: [email protected]
ASUS COMPUTER GmbH, Harkortstrasse 21-23, 40880 Ratingen, Germany, Europe, [email protected]
ASUS is a symbol of the growth of Taiwan's economy. The firm's beginnings date back to April 2, 1989, when as a small manufacturer of motherboards began his work with a few employees. Today, Asus employs more than 12,500 employees worldwide.
ASUS products can be found in almost every category of the information technology marketplace. ASUS is focused on desktops, laptops, phones, optical drives and components. In the manufacture of motherboards, the company is now the dominant player with a staggering 40% market share.
This product is not an independently functional unit and may require professional installation.
Specifications can be changed without notice. Images are for illustrative purposes only.

