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ASUS Prime B860M-A WiFi-CSM

Motherboard • ASUS • $ 169.35

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Build a Powerful, Compact Intel System

The ASUS Prime B860M-A WiFi-CSM is a feature-rich Micro-ATX motherboard designed for Intel's latest Core Ultra processors (LGA 1851). Whether you're assembling a high-performance gaming rig, a content creation workstation, or a compact productivity PC, this board delivers exceptional performance, modern connectivity, and robust reliability in a space-saving form factor.

Next-Gen Performance and Memory

Supporting Intel's new LGA 1851 socket and the Intel B860 chipset, the Prime B860M-A WiFi-CSM unlocks the full potential of your CPU. With four DDR5 DIMM slots, you can install up to 256GB of high-speed memory, and thanks to Intel XMP and AEMP III, you can achieve speeds up to 8666+ MT/s (overclocked) for lightning-fast data access and smooth multitasking. The board's dual-channel architecture ensures optimal bandwidth for demanding applications.

Cutting-Edge Connectivity and Storage

Stay ahead with the latest connectivity options. The board features a PCIe 5.0 x16 slot (SafeSlot) for the fastest graphics cards, plus additional PCIe 4.0 slots for expansion. Storage is handled by two M.2 slots—one Gen 5 x4 and one Gen 4 x4—for ultra-fast NVMe SSDs, along with four SATA 6Gb/s ports supporting RAID 0/1/5/10. Networking is covered by Realtek 2.5Gb Ethernet and Wi-Fi 6E (Intel AX211) with Bluetooth 5.3, ensuring lag-free online gaming and seamless wireless connectivity.

Comprehensive I/O and User-Friendly Features

The rear I/O panel is well-equipped with HDMI 2.1 and DisplayPort 1.4 for integrated graphics, a USB 3.2 Gen 2x2 Type-C port (20Gbps), multiple USB Type-A ports, and a BIOS FlashBack button for easy BIOS updates. Onboard headers include a front-panel USB 3.2 Gen 2 Type-C connector and additional USB headers for maximum flexibility. The Realtek ALC897 audio codec delivers crisp 7.1-channel surround sound for an immersive experience.

Built for Reliability and Easy Setup

ASUS Prime series motherboards are known for their durability, featuring premium components, robust power delivery, and comprehensive cooling options. The BIOS is user-friendly, with advanced tuning options for enthusiasts. Whether you're a gamer, creator, or professional, the ASUS Prime B860M-A WiFi-CSM offers the perfect balance of performance, features, and value in a compact Micro-ATX package.

Key Specifications

Form Factor: Micro‑ATX

Socket: LGA 1851

RAM Type: DDR5 (dual‑channel, XMP/AEMP III, up to 8666+ MT/s OC)

Max. RAM: 256 GB

RAM Slots: 4

Chipset: Intel B860

Connectivity

1X PCI Express 5.0 x16 (SafeSlot),, 1X PCIe 4.0 x16 (x4 mode),, 1X PCIe 4.0 x1,, 2X M.2 NVMe (1X Gen 5 x4, 1X Gen 4 x4),, 4X SATA 6 Gb/s, RAID 0/1/5/10 support,, Realtek 2.5 Gb Ethernet,, Wi‑Fi 6E (Intel AX211, 2×2 + 6 GHz),, Bluetooth 5.3,, 7.1‑Channel HD Audio (Realtek ALC897)

Back Panel IO

1X HDMI 2.1, 1X DisplayPort 1.4,, 1X USB 3.2 Gen 2x2 Type‑C (20 Gbps),, 1X USB 3.2 Gen 2 Type‑A (10 Gbps),, 2X USB 3.2 Gen 1 Type‑A (5 Gbps),, 4X USB 2.0 Type‑A,, 1X RJ45 (2.5 GbE LAN),, 2X Wi‑Fi antenna connectors,, 3X 3.5 mm audio jacks,, 1X BIOS FlashBack Button

Onboard USB Headers: 1X USB 3.2 Gen 2 front-panel Type‑C (10 Gbps), 1X USB 3.2 Gen 1 header (2 ports), 1X USB 2.0 header (2 ports)

Detailed Parameters

Platform:: Intel
Socket:: LGA 1851
RAM Type:: DDR5
Number of RAM Slots:: 4
Maximum RAM/slot:: 64
Maximum RAM Capacity in GB:: 256
PCI Express Version:: 5
Form Factor:: Micro-ATX
Maximum RAM Speed in MHz:: 8666
ECC:: No
Chipset:: B860
SupportedPlatforms:: Intel Consumer

Where to Buy

Amazon

Pros

Supports latest Intel Core Ultra (LGA 1851) processors
High-speed DDR5 memory up to 8666+ MT/s (OC)
PCIe 5.0 for next-gen GPUs and storage
Integrated Wi-Fi 6E and 2.5Gb Ethernet
Comprehensive rear I/O with USB 3.2 Gen 2x2 Type-C

Cons

Only one PCIe 5.0 x16 slot (no multi-GPU support)
Limited to 4 SATA ports (may be insufficient for many drives)
Realtek ALC897 audio codec is entry-level

Frequently Asked Questions

What CPU socket does the ASUS Prime B860M-A WiFi-CSM use?

It uses the Intel LGA 1851 socket, compatible with Intel Core Ultra processors (Arrow Lake).

Does the ASUS Prime B860M-A WiFi-CSM support DDR5 memory overclocking?

Yes, it supports Intel XMP and AEMP III, allowing memory speeds up to 8666+ MT/s (overclocked).

How many M.2 slots does the ASUS Prime B860M-A WiFi-CSM have?

It has two M.2 slots: one PCIe 5.0 x4 and one PCIe 4.0 x4, both supporting NVMe SSDs.

Does the ASUS Prime B860M-A WiFi-CSM have built-in Wi-Fi?

Yes, it includes Intel Wi-Fi 6E (AX211) with Bluetooth 5.3, providing fast wireless connectivity.

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