PRIME B860-PLUS-CSM
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PRIME B860-PLUS-CSM motherboard front view, floating in space.

B860-PLUS-CSM

ASUS PRIME series motherboards are expertly engineered to unleash the full potential of the latest Intel® Core™ Ultra Processors (Series 2). Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, the PRIME B860-PLUS-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
Advanced AI PC ready logo
Intel Core Ultra Processor badge
Intel B860 Chipset badge
8+1+1+1 power stages

8(80A) + 1(80A) + 1(80A) + 1(80A)

power stages with enlarged VRM heatsinks
AI Solutions logo

AI Solutions

for advanced AI capabilities
DDR5 logo

AEMP III

for enhanced DDR5 performance
USB 20Gbps logo

USB 20Gbps Type-C®

for rapid data transmission
PCIe 5.0 logo

PCIe 5.0 slots

for graphics card and storage
2.5Gb Ethernet logo

2.5Gb Ethernet

for faster data transfers
EZ PC DIY logo

EZ PC DIY

for easier build customization
Pre-mounted I/O shield logo

Pre-mounted
I/O shield

for safeguarding ports and enhancing aesthetics
Aura Sync logo

Aura Sync

for full RGB lighting control

ASUS Corporate Stable Model

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software.
Learn more about ASUS CSM program
* Lifecycle support, program offering and supply status may vary by region. Please consult your local sales representative for more information.
ASUS Corporate Stable logo with text stating 'Up to 36-month Stable Supply' in a circular design on a blue background.

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.
Learn more about ASUS Control Center Express

Optimize IT endpoint management

Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely.

White network icon with connected nodes on a blue background, below the text 'Optimize IT endpoint management,' describing the benefits for IT staff monitoring and controlling devices remotely.

Automate IT maintenance

Allows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility.

White shield icon with a checkmark inside on a blue circular background

Securely manage all of endpoints

Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices.

White calendar icon with a green highlighted date on a blue circular background

Performance

AI Solutions

ASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.

AI Advisor

ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.1

UI showing that AI Advisor can be interacted using natural language.

Performance

Robust power design

Stable power is crucial for maximizing the performance of Intel® Core™ Ultra Processors (Series 2). The PRIME B860-PLUS-CSM is designed to meet the needs of high-core-count CPUs. It features 8(80A) + 1(80A) + 1(80A) + 1(80A) power stages that integrate high-side and low-side MOSFETs and drivers into packages rated for up to 80 amperes each. This configuration ensures optimal power delivery, efficiency, stability and performance for both current and future Intel® processors.
8
VCCCORE power
(80A, DrMOS) ​
1
VCCGT powe​​​​r
(80A, DrMOS)
1
VCCSA powe​​​​r
(80A, DrMOS)
1
VNNAON power
(80A, DrMOS)
Angled top-down view of PRIME B860-PLUS-CSM motherboard.

Enhanced Memory & Storage Performance

AEMP III for Ultimate DDR5 Performance

ASUS Enhanced Memory Profile III (AEMP III) is an advanced firmware feature that empowers users to achieve unparalleled memory performance with cutting-edge CUDIMM memory. Through a two-phase comprehensive tuning process, AEMP III first optimizes the clock driver and then the memory frequency. This results in the best balance between performance and stability, even at cutting-edge speeds of DDR5-7600 or higher.2
Graphic depicting RAM speeds.

DIMM Fit

DIMM Fit is an ASUS-exclusive BIOS feature that precisely analyzes individual memory modules to optimize performance and pinpoint potential issues. This offers peak efficiency, compatibility, and system stability. Whether you are an overclocker seeking ultimate performance, a competitor pursuing the most responsive gameplay, or a content creator prioritizing rock-solid stability, DIMM Fit provides optimizations tailored to your needs and your hardware configuration.4
Graphic marking the location of DIMMs and showing the UI of the feature DIMM Fit.

Three M.2 ​​​​slots (up to 128Gbps)

PRIME B860-PLUS-CSM offers a total of three M.2 slots, including one that supports data-transfer speeds of up to 128Gbps via PCIe 5.0, one that support 64Gbps via PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.3
Graphic depicting different M.2 ​​​​slots on a motherboard.

Cooling

Cooler by design

The PRIME B860-PLUS-CSM motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.
PRIME B860-PLUS-CSM front view.

VRM heatsinks and thermal pads

The massive VRM heatsinks and essential thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.

​​​​​4-Pin PWM/DC fan

Each onboard header supports auto-detection of PWM or DC fans.

AIO pump header

A dedicated PWM/DC header supports self-contained water-cooling setups.

Multiple temperature sources

Each header can dynamically reference four thermal sensors. Fan Xpert 2+ lets you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

M.2 heatsink

One M.2 heatsink takes care of the M.2 slot, preventing throttling that can occur with M.2 storage during extended transfers.

Passive chipset heatsink

An aluminum passive chipset heatsink ensures optimal cooling and stable performance. It is more durable and longer-lasting than heatsinks with fans, which can be vulnerable to the buildup of dust and debris.

Smart protection

A dedicated integrated circuit protects each fan header from overheating and excess current.

Cooling

Smart cooling precision

ASUS Fan Xpert 2+

ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.4
UI for Fan Xpert 2+

Flexibility

Empowering connections

The PRIME B860-PLUS-CSM motherboard offers a versatile range of connectivity, including the latest version of PCI Express, while an arsenal of USB ports includes Type-C® connections expands compatibility and bandwidth even further.
Realtek 2.5Gb Ethernet logo

2.5Gb Ethernet

PCIe 5.0 logo

PCIe 5.0

USB 20Gbps logo

USB 20Gbps

PCIe 5.0 slot logo

PCIe 5.0 slot

USB 20Gbps port

A batch of USB ports supports high-end rigs loaded with peripherals, including a rear USB Type-C® port with transmission speeds of up to 20Gbps. 
I/O ports highlighting USB 20Gbps port

PCIe 5.0 s​​​​lot

The latest processors introduce PCIe 5.0 support, doubling data transfer speeds compared to PCIe 4.0, enhancing signal integrity, and providing backward-compatible CEM connectors and support for previous PCIe versions.

Customization

Personalization

The PRIME B860-PLUS-CSM enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.

UEFI BIOS

The UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.

UEFI BIOS advanced mode UI.

ASUS DriverHub

Simplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.

ASUS DriverHub UI

Armoury Crate

Customize Aura Sync RGB and control ASUS devices. Includes product registration and updates.

ASUS Armoury Crate UI

Aura Sync

Complete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.

ASUS Aura Sync Logo

Addressable Gen2 RGB headers

Three Addressable Gen2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.

Image depicting PRIME B860-PLUS-CSM ARGB connectors.

Customization

DIY friendly

The PRIME B860-PLUS-CSM motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.
  1. Availability of ASUS AI Advisor may vary by region.
    AI Advisor functions may vary by platform. ↑
  2. Results may vary according to individual system specifications. Currently, only 2-DIMM configurations are supported. Results are based on a test with an Intel Core Ultra 9 285K processor and 2x16GB SK Hynix DDR5-6400 Clocked Unbuffered DIMM RAM, model HMCG78AHBCA326N.↑
  3. Actual transmission speeds will be lower than the theoretical maximum speed.↑
  4. Image(s) for reference only.↑
  5. Video(s) for reference only.↑
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  • Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
  • *Precise specifications and features vary by model . Please refer to the specification page
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  • Learn more about battery usage, removal, replacement, and related safety guidelines

**Product specifications and battery design may vary depending on the model. For any questions, please contact ASUS official customer service.

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