ASUS PRIME B860M-K-CSM Micro-ATX LGA 1851 Motherboard
Feature
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 B860M-K-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.
ASUS Corporate Stable Model
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.

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.

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.

Performance
AI Solutions

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

Enhanced Memory & Storage Performance
AEMP III for Ultimate DDR5 Performance

DIMM Fit
Two M.2 slots (up to 128Gbps)
Cooling
Cooler by design
Cooling
Smart cooling precision

ASUS Fan Xpert 2+
Flexibility
Empowering connections
Realtek 2.5Gb Ethernet

USB 5Gbps Type-C®

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

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

SafeSlot Core+
SafeSlot Core+ is a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks, and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.
Feature | Specification |
---|---|
Model | PRIME B860M-K-CSM |
CPU Support | Intel® Core™ Ultra Processors (Series 2), LGA1851 |
Turbo Boost | Intel® Turbo Boost Technology 2.0 & Turbo Boost Max 3.0 |
Chipset | Intel® B860 Chipset |
Memory | 2 x DIMM slots, max. 128GB DDR5 |
Memory Speed | Up to 8800+ MT/s (OC), Non-ECC, Un-buffered DIMM |
Memory Features | Dual Channel Architecture, Intel® XMP & ASUS AEMPIII |
Graphics | 1 x DisplayPort (4K@60Hz, DisplayPort 1.4) 1 x HDMI™ (4K@60Hz, HDMI 2.1) |
Expansion Slots | 1 x PCIe 4.0 x16 (CPU) 2 x PCIe 4.0 x1 (Chipset) |
Storage | 2 x M.2 slots (1 PCIe 5.0 x4, 1 PCIe 4.0 x4) 4 x SATA 6Gb/s ports |
Ethernet | Realtek 2.5Gb Ethernet with ASUS LANGuard |
Rear USB Ports | 1 x USB 10Gbps Type-A 2 x USB 5Gbps Type-A 3 x USB 2.0 Type-A |
Front USB Ports | 1 x USB 5Gbps Type-C® 1 x USB 5Gbps header (2 ports) 2 x USB 2.0 headers (4 ports) |
Audio | Realtek 7.1 Surround Sound HD Audio CODEC Jack-detection, Multi-streaming, Front Panel Jack-retasking |
Premium Audio Features | Audio Shielding, Premium Capacitors, Dedicated PCB Layers |
Back Panel I/O Ports | 1 x USB 10Gbps Type-A 2 x USB 5Gbps Type-A 3 x USB 2.0 Type-A 1 x DisplayPort 1 x HDMI™ 1 x Realtek 2.5Gb Ethernet Port 3 x Audio Jacks 1 x PS/2 Keyboard/Mouse Combo Port |
Internal I/O Connectors | 1 x 24-pin Main Power Connector 1 x 8-pin +12V CPU Power Connector 2 x M.2 slots 4 x SATA 6Gb/s ports 1 x USB 5Gbps connector (USB Type-C®) 1 x USB 5Gbps header (2 ports) 2 x USB 2.0 headers (4 ports) 2 x Addressable Gen2 headers 1 x Aura RGB header 1 x Clear CMOS header 1 x COM Port header 1 x S/PDIF Out header |
Cooling Features | 1 x 4-pin CPU Fan header 2 x 4-pin Chassis Fan headers |
Special Features | ASUS 5X PROTECTION III (DIGI+VRM, LANGuard, Overvoltage Protection, SafeSlot Core+) ASUS Q-Design (Q-Dashboard, Q-DIMM, Q-LED Core, Q-Slot) ASUS Aura Sync with Addressable Gen2 headers |
Software | Armoury Crate (Aura Sync, Fan Xpert 2+, Power Saving) ASUS AI Advisor ASUS DriverHub Norton 360 Deluxe (60 Days Free Trial) WinRAR (40 Days Free Trial) |
BIOS | 256Mb Flash ROM, UEFI AMI BIOS ASUS EZ DIY: CrashFree BIOS 3, EZ Flash, UEFI BIOS EZ Mode |
Accessories | 2 x SATA 6Gb/s cables 1 x I/O Shield 1 x M.2 anchor package 1 x Quick Start Guide 1 x ACC Express activation key card |
Operating System Support | Windows 11 (22H2 & later) Windows 10 64-bit (21H2 & later) |
Form Factor | Micro-ATX (9.6″ x 8.75″ / 24.4cm x 22.2cm) |
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