Description

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 WIFI-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.



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

Robust power design
Stable power is crucial for maximizing the performance of Intel® Core™ Ultra Processors (Series 2). The PRIME B860M-A WIFI-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.
- 7 VCCCORE power (80A, DrMOS)
- 1 VCCGT power (80A, DrMOS
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1 VCCSA power (80A, DrMOS)
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1 VNNAON power (80A, DrMOS)



DIMM Fit / DIMM Fit Pro
DIMM Fit is an ASUS-exclusive BIOS feature that precisely analyzes individual memory modules to optimize performance and pinpoint potential issues. DIMM Fit Pro gives advanced PC builders more extensive customizability for memory tuning. It allows users to control up to twenty overclocking parameters, define testing ranges, and prioritize stability or performance, offering a more flexible and granular approach to memory optimization.

Two M.2 slots (up to 128Gbps)
The PRIME B860M-A WIFI-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.

ASUS Fan Xpert 2+
Smart cooling precision
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


WiFi 6E
Built-in WiFi 6E4 technology takes advantage of the newly available radio spectrum in the 6 GHz band. With triple the bandwidth of the 2.4/5/6 GHz band, WiFi 6E delivers ultrafast wireless networking speeds with improved capacity and better performance in dense wireless environments.

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

Q-LED Core
The Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.


Product Specs
| Model | PRIME B860M-A WIFI-CSM |
| CPU | Support Intel® Core™ Ultra Processors (Series 2), LGA1851 Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0 |
| Chipset | Intel® B860 Chipset |
| 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 Supports Intel® Extreme Memory Profile (XMP) memory module ASUS Enhanced Memory Profile III (AEMPIII) |
| Graphics | 2 x DisplayPort 1 x HDMI™ port |
| Expansion Slots | 1 x PCIe 5.0 x16 slot 1 x PCIe 4.0 x16 slot (supports x4 mode) 1 x PCIe 4.0 x1 slot |
| Storage | 2 x M.2 slots and 4 x SATA 6Gb/s ports M.2_1 slot: type 2242/2260/2280 (PCIe 5.0 x4 mode) M.2_2 slot: type 2242/2260/2280 (PCIe 4.0 x4 modes) 4 x SATA 6Gb/s ports |
| Ethernet | 1 x Realtek 2.5Gb Ethernet ASUS LANGuard |
| Wireless & Bluetooth | Wi-Fi 6E (802.11ax) 2×2 Wi-Fi 6E, supports 2.4/5/6GHz frequency band Bluetooth® v5.3 |
| USB | Rear USB (8 ports): 1 x USB 20Gbps port (USB Type-C®) 1 x USB 10Gbps port (Type-A) 2 x USB 5Gbps ports (Type-A) 4 x USB 2.0 ports (Type-A) Front USB (5 ports): 1 x USB 10Gbps connector (supports USB Type-C®) 1 x USB 5Gbps header (2 additional ports) 1 x USB 2.0 header (2 additional ports) |
| 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 Shielding, Premium audio capacitors, Dedicated audio PCB layers |
| Back Panel I/O | 1 x USB 20Gbps port (USB Type-C®) 1 x USB 10Gbps port (Type-A) 2 x USB 5Gbps ports (Type-A) 4 x USB 2.0 ports (Type-A) 2 x DisplayPort 1 x HDMI™ port 1 x Wi-Fi module 1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks |
| Internal Connectors | Fan and Cooling: 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: 1 x 24-pin Main Power connector 1 x 8-pin +12V CPU Power connector Storage: 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB: 1 x USB 10Gbps connector (USB Type-C®) 1 x USB 5Gbps header 1 x USB 2.0 header 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 1 x S/PDIF Out header 1 x SPI TPM header 1 x Front System Panel header 1 x Thunderbolt™ (USB4®) header |
| Special Features | ASUS 5X PROTECTION III: DIGI+ VRM, ESD Guards, LANGuard, Overvoltage protection, SafeSlot, Stainless-steel back I/O ASUS Q-Design: Q-Antenna, 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 | ASUS Exclusive Software: Armoury Crate (Aura Creator, Aura Sync, Fan Xpert 2+, Power Saving) ASUS DriverHub, ASUS GlideX, ASUS CPU-Z Norton 360 for Deluxe (60 Days Free Trial), WinRAR (40 Days Free Trial) UEFI BIOS: ASUS EZ DIY (CrashFree BIOS 3, EZ Flash, UEFI BIOS EZ Mode, MyHotkey) |
| BIOS | 256 (128+128) Mb Flash ROM, UEFI AMI BIOS |
| Accessories | 2 x SATA 6Gb/s cables 1 x ASUS WiFi Q-Antenna 1 x M.2 rubber package 1 x Screw package for M.2 SSD 1 x ACC Express Activation Key Card 1 x Quick start guide |
| Operating System | Windows 11 (22H2 & later), Windows 10 64-bit (21H2 & later) |
| Form Factor | micro-ATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm) |








