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ASUS PRIME B860M-A WIFI-CSM Micro-ATX Motherboard for Intel LGA1851, DDR5 up to 256GB, PCIe 5.0, WiFi 6E, Dual M.2 Slots, 4 SATA Ports
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SKU: prime b860m-a wifi-csm

Availability: In Stock

Brand: ASUS

Category: Motherboards

$270.86


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Description
SPECIFICATION
Review

ASUS PRIME B860M-A WIFI-CSM is a robust Micro-ATX motherboard engineered for business and commercial applications with Intel Core Ultra (Series 2) processors using the LGA1851 socket. Based on the Intel B860 chipset, it supports DDR5 memory up to 256 GB across four DIMM slots with advanced ASUS Enhanced Memory Profile III (AEMP III) for optimized overclocking and performance tuning.

Featuring a powerful 7(80A)+1(80A)+1(80A)+1(80A) DrMOS power design and enhanced VRM heatsinks, it delivers stable power even for high-core-count CPUs, making it ideal for productivity and demanding AI workloads. Storage options include two M.2 slots—one supporting blazing-fast PCIe 5.0 x4 (up to 128 Gbps) and another with PCIe 4.0 x4—along with four SATA 6Gb/s ports for versatile expansion.

Connectivity is comprehensive, featuring integrated 2x2 Wi-Fi 6E (supporting 2.4/5/6 GHz bands), Bluetooth 5.3, Realtek 2.5Gb Ethernet with ASUS LANGuard for reliable wired networking, a USB Type-C port at the rear with 20Gbps throughput and DisplayPort Alt Mode, plus multiple USB Type-A ports including a 10Gbps option.

The motherboard also offers multiple fan headers with ASUS Fan Xpert 2+ for advanced cooling control, a pre-mounted I/O shield for easy installation, Aura Sync RGB lighting control, and ASUS Corporate Stable Model (CSM) lifecycle support with endpoint management software, making it an excellent choice for professional PC builders and business systems.

For detailed compatibility and updates, ASUS provides regular firmware, software utilities, and a comprehensive support portal.

Key Benefits:

  • Supports latest Intel Core Ultra Processors with LGA1851 socket

  • Ultra-fast DDR5 memory support up to 256 GB with advanced tuning

  • PCIe 5.0 x16 SafeSlot for next-gen graphics and expansion

  • Dual M.2 slots delivering PCIe 5.0 and PCIe 4.0 NVMe speeds

  • Wi-Fi 6E and Bluetooth 5.3 for cutting-edge wireless connectivity

  • Robust power and thermal design for stable high-performance operation

  • Enhanced business-class features with ASUS CSM and endpoint management
Visit [ASUS official page]( for more information, drivers, and support.

General

USB Ports (Rear)1 x USB 3.2 Gen 2x2 Type-C (20Gbps,DP Alt Mode),1 x USB 3.2 Gen 2 Type-A (10Gbps),others
Expansion & FeaturesAura Sync RGB,Pre-mounted I/O Shield,Fan Xpert 2+,ASUS CSM support
Power Design7(80A)+1(80A)+1(80A)+1(80A) DrMOS power stages with enlarged heatsinks
Memory Support4 x DDR5 DIMM slots,up to 256 GB,channel
Memory TechnologyDDR5
Integrated WiFiWi-Fi 6E (802.11ax),2 dual band (2.4/5/6 GHz)

Networking

wi_fiWi-Fi 6E (802.11ax),2 dual band (2.4/5/6 GHz)
BluetoothBluetooth v5.3
LANRealtek 2.5Gb Ethernet with ASUS LANGuard

Memory

Memory Speed (MHz)7600
Max Memory SpeedOC up to DDR5-7600+ (via ASUS AEMP III)
Memory Channelschannel
max_memory_gb256
Memory Slots4

Expansion

PCIe Slots1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16 (x4 mode), 1 x PCIe 4.0 x1
PCIe Slots1 x PCIe 5.0 x16 (SafeSlot),1 x PCIe 4.0 x16 (x4 mode),1 x PCIe 4.0 x1
M.2 Slots2 (M.2_1: PCIe 5.0 x4,M.2_2: PCIe 4.0 x4)
M.2 Slots2

Compatibility

CPU SocketLGA1851
CPU SocketLGA1851

Storage

SATA Ports4 x SATA 6Gb\/s
SATA Ports4

Video

Display Outputs1 x HDMI, 2 x DP

Power

Power Connectors7(80A)+1(80A)+1(80A)+1(80A) DrMOS power stages with enlarged heatsinks

Physical

Form FactorMicro-ATX
Form FactorMicro-ATX

Technical

memory_typeDDR5

Internal

ChipsetIntel B860

Identification

ManufacturerASUS
ModelPRIME B860M-A WIFI-CSM

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