| Basic Information | ||
| Supported CPU | Supports Intel Core Ultra Processors (Series 2), LGA1851 Socket | |
| Chipset | Intel B860 Chipset | |
| BIOS | 256(128+128) Mb Flash ROM, UEFI AMI BIOS | |
| Form Factor | micro-ATX | |
| Audio | Realtek 7.1 Surround Sound High Definition Audio CODEC | |
| Expansion Slots | ||
| PCI | Intel® Core™ Ultra Processors (Series 2) 1 x PCIe 4.0 x16 slot Intel® B860 Chipset 2 x PCIe 4.0 x1 slots |
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| M.2 Socket | Total supports 2 x M.2 | |
| Memory | ||
| Maximum Memory | 128GB | |
| Slots | 2 x DIMM | |
| Supported Memory | 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) |
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| Type | DDR5 | |
| Graphics | ||
| 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. |
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| Connector & Ports | ||
| HDMI | 1 x HDMI 2.1 | |
| USB (s) | 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. |
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| LAN Port (s) | 1 x Realtek 2.5Gb Ethernet ASUS LANGuard |
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| Supported 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 |
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| RAID | Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10. | |
| 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. |
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| Internal I/O Ports | 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 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 |
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| Display Port (s) | 1 x DisplayPort 1.4 | |
| TPM (Trusted Platform Module ) | 1 x SPI TPM header (14-1 pin) | |
| Others | ||
| 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 |
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| Bundled Software | 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 DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash - ASUS UEFI BIOS EZ Mode - ASUS MyHotkey |
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| Warranty Information | ||
| Warranty | 3 Year | |
The Asus Prime B860M-K-CSM is a highly efficient Micro-ATX motherboard built on the Intel B860 chipset and featuring the LGA1851 socket. Specifically engineered to anchor compact, corporate-ready, and mainstream builds, this motherboard delivers full compatibility for Intel Core Ultra Processors (Series 2). It provides an "Advanced AI PC-ready" foundation that pairs solid hardware reliability with essential modern connectivity.
As part of the ASUS Corporate Stable Model (CSM) ecosystem, it offers businesses streamlined IT deployment and server-grade management via centralized software monitoring. Powering the new architecture is a reliable 6+1+1+1 phase digital power design utilizing discrete MOSFETs and ProCool connectors. This setup ensures highly stable, clean power routing to the CPU, while dedicated VRM heatsinks and thermal pads prevent localized hot spots during sustained multi-threaded office work or creative tasks.
Despite its space-saving mATX form factor, the motherboard houses two dual-channel DDR5 DIMM slots that support up to 128GB of high-speed memory. Enhanced by ASUS Enhanced Memory Profile III (AEMP III), it allows users to unlock and optimize memory performance up to 8800+ MT/s (OC). Storage speed is maximized via dual M.2 slots, including a primary PCIe 5.0 x4 slot that delivers ultra-fast 128Gbps data bandwidth, working alongside a secondary PCIe 4.0 slot and four SATA 6Gb/s ports.
The physical layout incorporates SafeSlot Core+ to easily support heavy modern graphics cards in the main PCIe 4.0 x16 expansion slot. Rear panel and internal configurations provide excellent throughput, featuring integrated Realtek 2.5Gb Ethernet for rapid wired networks, a high-speed rear USB 10Gbps Type-A port, and an internal header for front panel USB Type-C connectivity. Diagnostic Q-LED Core indicators and full Aura Sync RGB header controls complete this reliable, flexible layout.
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