Key Features
- Micro ATX Form Factor
- Intel B860 Chipset
- Socket 1851
- DDR5 (Max: 192GB / 4 slots)
- 2 x M.2 & 8 x USB & 4 x SATA
- HDMI and Display Port
Shipping & Delivery
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Standard Delivery
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5-7 Working Days
From £4.99
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Asus PRIME B860M-A-CSM Micro ATX Motherboard for Intel LGA1851 CPUs
£128.01 Original price was: £128.01.£125.16Current price is: £125.16. INC VAT
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Key Features
- Micro ATX Form Factor
- Intel B860 Chipset
- Socket 1851
- DDR5 (Max: 192GB / 4 slots)
- 2 x M.2 & 8 x USB & 4 x SATA
- HDMI and Display Port
Shipping & Delivery
-
Standard Delivery
Our courier will deliver to the specified address
5-7 Working Days
From £4.99
-
Express Delivery
DHL courier will deliver to the specified address
2-3 Working Days
From £9.99
-
Free 30-Day returns
Description
ASUS PRIME B860M-A-CSM Built for AI-Ready Business Performance

Engineered for Next-Gen Performance
The ASUS PRIME B860M-A-CSM is a micro-ATX motherboard built to take full advantage of Intel® Core™ Ultra (Series 2) processors. Featuring the Intel B860 chipset and LGA 1851 socket, it brings next-generation performance with DDR5 memory support, PCIe 5.0 graphics capabilities, and high-speed connectivity. With ASUS-exclusive features like Fan Xpert 2+, Armoury Crate, and Q-LED Core, it streamlines everything from system cooling to diagnostics—making it an ideal foundation for mainstream desktops or professional setups.

Business-Class Stability and Control
Designed under the ASUS Corporate Stable Model (CSM) initiative, this motherboard provides enterprise-grade stability with up to 36 months of product lifecycle support. It comes bundled with ASUS Control Center Express—IT-grade management software for remote monitoring, deployment, and automation. IT departments can efficiently manage large-scale systems while ensuring optimal performance and security thanks to advanced diagnostics, BIOS FlashBack support, and real-time endpoint control.

Connectivity and Expansion for Modern Demands
Whether it’s AI-powered workloads, data-intensive tasks, or high-speed networking, the PRIME B860M-A-CSM is ready. With dual M.2 slots (PCIe 5.0 & 4.0), Realtek 2.5Gb Ethernet, and both USB 20Gbps and USB 10Gbps Type-C® connectivity, you’re prepared for anything. It also includes three Display outputs (HDMI and Dual DisplayPort), addressable Gen2 RGB headers for personalization, and SafeSlot reinforcement to securely handle powerful GPUs. It’s DIY-friendly, AI-ready, and tailored for tomorrow’s business and enthusiast desktops.
| Specification | Details |
|---|---|
| Motherboard Type | Desktop |
| Form Factor | Micro ATX |
| Socket | Intel LGA 1851 |
| Chipset | Intel B860 |
| CPU Support | View Supported CPUs |
| Memory Type | DDR5 (Dual Channel, Non-ECC, Un-buffered CUDIMM) |
| Memory Slots | 4 x DIMM |
| Memory Speed | Up to 8666+ MT/s (OC) |
| Max Memory | 256GB |
| Graphics Output | 1 x HDMI, 2 x DisplayPort (depends on CPU) |
| Expansion Slots | 1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16 (x4), 1 x PCIe 4.0 x1 |
| Storage | 4 x SATA 6Gb/s, 2 x M.2 (PCIe 5.0 x4 & PCIe 4.0 x4) |
| RAID Support | RAID 0/1/5/10 (SATA via Intel RST) |
| Networking | Realtek 2.5Gb Ethernet |
| Audio | Realtek 7.1 Surround HD Audio CODEC |
| Rear USB Ports | 1 x USB 20Gbps Type-C, 1 x USB 10Gbps Type-A, 2 x USB 5Gbps Type-A, 4 x USB 2.0 |
| Front USB Ports | 1 x USB 10Gbps Type-C, 2 x USB 5Gbps, 2 x USB 2.0 |
| Back Panel I/O | 1 x USB 20Gbps Type-C, 1 x USB 10Gbps Type-A, 2 x USB 5Gbps Type-A, 4 x USB 2.0, 2 x Display Port, 1 x HDMI, 1 x 2.5Gb LAN, 3 x Audio jacks |
| Internal Connectors | 1 x 24-pin Main, 1 x 8-pin CPU +12V, 1 x CPU Fan, 1 x CPU OPT, 1 x AIO Pump, 3 x Chassis Fan, 2 x M.2 (Key M), 4 x SATA, 1 x USB 10Gbps Type-C, 1 x USB 5Gbps, 1 x USB 2.0, 3 x Addressable Gen2 RGB, 1 x Aura RGB, 1 x COM, 1 x Clear CMOS, 1 x Front Panel Audio, 1 x S/PDIF Out, 1 x Thunderbolt (USB4), 1 x SPI TPM |
| Accessories | 2 x SATA Cables, 1 x M.2 Rubber Package, 1 x M.2 Screw Package, 1 x ACC Express Key Card, 1 x Quick Start Guide |
| Package | Retail |
| Package Weight | 1.36 kg |
| Warranty | 3 Years |
