ASUS PRIME B860M-A-CSM mATX Motherboard
Expertly engineered to unleash the full potential of Intel® Core™ Ultra Processors (Series 2), the ASUS PRIME B860M-A-CSM delivers a balance of power, efficiency, and intelligent tuning. With robust VRM design, PCIe 5.0, DDR5 support, and AI-optimized management tools, this micro-ATX board is ready for the next generation of performance builds. It’s also part of the ASUS Corporate Stable Model program, ensuring long-term availability and IT-grade reliability.
Key Features
- Intel® B860 chipset, LGA 1851 socket
- Supports Intel® Core™ Ultra (Series 2) CPUs
- Advanced AI PC-ready design
- 7+1+1+1 80A DrMOS power stages
- DDR5 memory with AEMP III and DIMM Fit
- PCIe 5.0 x16 graphics support
- Dual DisplayPort + HDMI™
- USB 20Gbps Type-C® (rear), USB 10Gbps Type-C® (front)
- 2 x M.2 slots (PCIe 5.0 & 4.0)
- Realtek 2.5Gb Ethernet
- ASUS Fan Xpert 2+, Armoury Crate, Aura Sync
- Pre-mounted I/O shield, SafeSlot PCIe, Q-LED Core
- CSM model with ASUS Control Center Express
Specifications
| 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 | From CPU: – 1 x PCIe 5.0 x16 From Chipset: – 1 x PCIe 4.0 x16 (x4 mode) – 1 x PCIe 4.0 x1 |
| Storage | 4 x SATA 6Gb/s 2 x M.2 Slots: – M.2_1: PCIe 5.0 x4 (2242/2260/2280) – M.2_2: PCIe 4.0 x4 (2242/2260/2280) |
| 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 DisplayPort, 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 headers – 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 |
