
Asus Prime B860M-K-CSM DDR5 LGA1851 m-ATX Motherboard
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
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.
Digital Power Design
DIMM Fit
Two M.2 slots (up to 128Gbps)
Empowering connections
Realtek 2.5Gb Ethernet
USB 5Gbps Type-C®
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.
Model | PRIME B860M-K-CSM |
News & Updates | Please visit our GLOBAL website to check and download the latest updates. |
CPU | Supports Intel® Core™ Ultra Processors (Series 2), LGA1851* |
Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0** | |
* Refer to https://www.asus.com/support/download-center/ for CPU support list. | |
** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types. | |
Chipset | Intel® B860 Chipset |
Memory | 2 x DIMM slots, max. 128GB, DDR5 |
Supports up to 8800+MT/s (OC), Non-ECC, Un-buffered, Clocked Unbuffered DIMM (CUDIMM)* | |
Dual channel memory architecture | |
DIMM Fit | |
Supports Intel® Extreme Memory Profile (XMP) memory module | |
ASUS Enhanced Memory Profile III(AEMPIII) | |
** Non-ECC, un-buffered DDR5 memory supports On-Die ECC function. | |
Graphics | 1 x DisplayPort** |
1 x HDMI™ port*** | |
* Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates. | |
** Supports max. 4K@60Hz as specified in DisplayPort 1.4. | |
*** Supports 4K@60Hz as specified in HDMI 2.1. | |
**** VGA resolution support depends on processors' or graphic cards' resolution. | |
Expansion Slots | Intel® Core™ Ultra Processors (Series 2) |
1 x PCIe 4.0 x16 slot | |
Intel® B860 Chipset | |
2 x PCIe 4.0 x1 slots | |
- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals. | |
Storage | Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports* |
Intel® Core™ Ultra Processors (Series 2) * | |
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode) | |
Intel® B860 Chipset | |
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) | |
4 x SATA 6Gb/s ports | |
* Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10. | |
Ethernet | 1 x Realtek 2.5Gb Ethernet |
ASUS LANGuard | |
USB | Rear USB (Total 6 ports) |
1 x USB 10Gbps port (1 x Type-A) | |
2 x USB 5Gbps ports (2 x Type-A) | |
3 x USB 2.0 ports (3 x Type-A)** | |
Front USB (Total 7 ports) | |
1 x USB 5Gbps connector (supports USB Type-C®) | |
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports | |
2 x USB 2.0 headers support 4 additional USB 2.0 ports** | |
* USB Type-C® power delivery output: max. 5V/3A. | |
** USB_E1 port, USB_E2 port, USB_E3 port and USB_E4 port share the bandwidth. | |
Audio | Realtek 7.1 Surround Sound High-Definition Audio CODEC* |
Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking | |
Supports up to 24-Bit/192 kHz playback | |
Audio Features | Audio Shielding |
Premium audio capacitors | |
Dedicated audio PCB layers | |
A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output. | |
Back Panel I/O Ports | 1 x USB 10Gbps port (1 x Type-A) |
2 x USB 5Gbps ports (2 x Type-A) | |
3 x USB 2.0 ports (3 x Type-A) | |
1 x DisplayPort | |
1 x HDMITM port | |
1 x Realtek 2.5Gb Ethernet port | |
3 x Audio jacks | |
1 x PS/2 Keyboard/Mouse combo port | |
Internal I/O Connectors | Fan and Cooling Related |
1 x 4-pin CPU Fan header | |
2 x 4-pin Chassis Fan headers | |
Power Related | |
1 x 24-pin Main Power connector | |
1 x 8-pin +12V CPU Power connector | |
Storage Related | |
2 x M.2 slots (Key M) | |
4 x SATA 6Gb/s ports | |
USB | |
1 x USB 5Gbps connector (supports USB Type-C® ) | |
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports | |
2 x USB 2.0 headers support 4 additional USB 2.0 ports | |
Miscellaneous | |
2 x Addressable Gen2 headers | |
1 x Aura RGB header | |
1 x Clear CMOS header | |
1 x COM Port header | |
1 x Front Panel Audio header (F_AUDIO) | |
1 x S/PDIF Out header | |
1 x SPI TPM header (14-1 pin) | |
1 x 10-1 pin Front Panel System header | |
Special Features | ASUS 5X PROTECTION III |
DIGI+VRM | |
LANGuard | |
Overvoltage protection | |
SafeSlot Core+ | |
Stainless-steel back I/O | |
ASUS Q-Design | |
Q-Dashboard | |
Q-DIMM | |
Q-LED Core | |
Q-Slot | |
ASUS Thermal Solution | |
VRM heatsink design | |
ASUS EZ DIY | |
ProCool | |
Aura Sync | |
Aura RGB header | |
Addressable Gen2 headers | |
Software Features | ASUS Exclusive Software |
Armoury Crate | |
Aura Sync | |
Fan Xpert 2+ | |
Power Saving | |
ASUS AI Advisor | |
ASUS DriverHub | |
ASUS CPU-Z | |
Norton 360 Deluxe (60 Days Free Trial) | |
WinRAR (40 Days Free Trial) | |
UEFI BIOS | |
ASUS EZ DIYASUS Crash | |
Free BIOS 3 | |
ASUS EZ Flash | |
ASUS UEFI BIOS EZ Mode | |
ASUS UEFI BIOS EZ Mode | |
BIOS | 256(128+128) Mb Flash ROM, UEFI AMI BIOS |
Manageability | WOL by PME, PXE |
Accessories | Cables |
2 x SATA 6Gb/s cables | |
Miscellaneous | |
1 x I/O Shield | |
1 x M.2 anchor package | |
Documentation | |
1 x Quick start guide | |
1 x ACC Express activation key card | |
Operating System | Windows 11(22H2 & later), Windows 10 64-bit(21H2 & later) |
Form Factor | micro-ATX Form Factor |
9.6 inch x 8.75 inch (24.4cm x 22.2cm) |