Asus PRIME B860M-A-CSM DDR5 Intel Motherboard

Key Features

Prime B860M-A-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 B860M-A-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 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.

AI Solutions

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

Robust power design

Stable power is crucial for maximizing the performance of Intel® Core™ Ultra Processors (Series 2). The PRIME B860M-A-CSM is designed to meet the needs of high-core-count CPUs. It features 7(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.

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.

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.

Two M.2 slots (up to 128Gbps)

The PRIME B860M-A-CSM offers a total of two M.2 slots, including one that supports data-transfer speeds of up to 128Gbps via PCIe 5.0, one that supports 64Gbps via PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.

Cooler by design

The PRIME B860M-A-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.

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.

Cooler compatibility

ASUS AIO coolers offer robust performance, high overclocking potential, bold aesthetics and customizable functionality for new motherboards, empowering you to build your dream gaming rig.

Empowering connections

The PRIME B860M-A-CSM motherboard offers a versatile range of connectivity, including support for the latest version of PCI Express and an arsenal of USB ports which includes Type-C connections.

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.

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.

Personalization

The PRIME B860M-A-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.

DIY friendly

The PRIME B860M-A-CSM motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.

Specification

Model : PRIME B860M-A-CSM

Chipset : Intel® B860 Chipset

BIOS : 256 (128+128) Mb Flash ROM, UEFI AMI BIOS

Manageability : WOL by PME, PXE

Operating System : Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)

CPU

Support Intel® Core™ Ultra Processors (Series 2) , LGA1851*

Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0

Memory

4 x DIMM slots, max. 256GB, DDR5

Supports up to 8666+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)

Graphics

2 x DisplayPort

1 x HDMI™ port

Expansion Slots

Intel® Core™ Ultra Processors(series 2)

1 x PCIe 5.0 x16 slot

Intel® B860 Chipset

1 x PCIe 4.0 x16 slot (supports x4 mode)

1 x PCIe 4.0 x1 slot

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 modes)

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 8 ports)

1 x USB 20Gbps port (1 x USB Type-C®)

1 x USB 10Gbps port (1 x Type-A )

2 x USB 5Gbps ports (2 x Type-A)

4 x USB 2.0 ports (4 x Type-A)

Front USB (Total 5 ports)

1 x USB 10Gbps connector (supports USB Type-C® )

1 x USB 5Gbps header supports 2 additional USB 5Gbps ports

1 x USB 2.0 header supports 2 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

Back Panel I/O Ports

1 x USB 20Gbps port (1 x USB Type-C®)

1 x USB 10Gbps port (1 x Type-A)

2 x USB 5Gbps ports (2 x Type-A)

4 x USB 2.0 ports (4 x Type-A )

2 x DisplayPort

1 x HDMI™ port

1 x Realtek 2.5Gb Ethernet port

3 x Audio jacks

Internal I/O Connectors

Fan and Cooling Related

1 x 4-pin CPU Fan header

1 x 4-pin CPU OPT Fan header

1 x 4-pin AIO Pump header

3 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 10Gbps connector (supports USB Type-C® )

1 x USB 5Gbps header supports 2 additional USB 5Gbps ports

1 x USB 2.0 header supports 2 additionalUSB 2.0 ports

Miscellaneous

3 x Addressable Gen 2 headers

1 x Aura RGB header

1 x Clear CMOS header

1 x Chassis Intrusion 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 System Panel header

1 x Thunderbolt™ (USB4®) header

Special Features

ASUS 5X PROTECTION III

- DIGI+ VRM (- Digital power design with DrMOS)

- ESD Guards

- LANGuard

- Overvoltage protection

- SafeSlot

- Stainless-steel back I/O

ASUS Q-Design

- Q-Dashboard

- Q-DIMM

- Q-LED Core

- Q-Slot

ASUS Thermal Solution

- M.2 heatsink

- VRM heatsink design

ASUS EZ DIY

- ProCool

- Pre-mounted I/O shield

Aura Sync

- Aura RGB header

- Addressable Gen2 headers

Software Features

ASUS Exclusive Software

Armoury Crate

- Aura Creator

- Aura Sync

- Fan Xpert 2+

- Power Saving

ASUS DriverHub

ASUS CPU-Z

Norton 360 for 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

Accessories

Cables

2 x SATA 6Gb/s cables

Miscellaneous

1 x M.2 rubber package

1 x Screw package for M.2 SSD

Documentation

1 x ACC Express Activation Key Card

1 x Quick start guide

Form Factor

micro-ATX Form Factor

9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)