ASUS PRO B860M-C-CSM LGA1851 µATX B860 DDR5 Motherboard
ASUS PRO B860M-C-CSM is a µATX motherboard with Intel B860 chipset, LGA1851 socket for Core Ultra 2xx CPUs. Features 4x DDR5 up to 256GB, PCIe 5.0 x16, 2x M.2 (PCIe5+4), 4x SATA6, 2.5GbE LAN, HDMI+2xDP.
Available in 4–6 business days : 5 pieces
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The ASUS PRO B860M-C-CSM is a commercial-grade micro-ATX motherboard designed for business and professional use, featuring the Intel® B860 chipset and LGA1851 socket for Intel® Core Ultra Series 2 (Arrow Lake) processors. It supports up to 256GB of DDR5 memory across four DIMM slots with speeds up to 8666+ MT/s (OC), including XMP and AEMP III profiles for optimal performance. Expansion includes a PCIe 5.0 x16 SafeSlot for graphics, PCIe 4.0 x16 (x4 mode), and PCIe 4.0 x1 slots.
Storage options comprise two M.2 slots—one PCIe 5.0 x4 from CPU, one PCIe 4.0 x4 from chipset—plus four SATA 6Gb/s ports with RAID 0/1/5/10 support. Connectivity features Intel® 2.5GbE LAN, Realtek 7.1 surround audio, rear USB 10Gbps Type-C/A, front headers for USB 5Gbps and Type-C, PS/2 keyboard, and video outputs (1x HDMI 2.1, 2x DisplayPort 1.4). Ideal for reliable 24/7 operation in workstations.
- CPU: Intel Core Ultra 2xx (LGA1851), 1 CPU max
- Memory: 4x DDR5, 256GB max, Dual Channel, XMP
- Storage: 2x M.2, 4x SATA6Gb/s, RAID 0/1/5/10
- Expansion: PCIe 5.0 x16, PCIe 4.0 x16(x4), PCIe 4.0 x1
- Network: Intel 2.5GbE LAN
- Audio/Video: Realtek 7.1, HDMI 2.1 + 2x DP1.4
- Form Factor: µATX, ATX 24+8-pin power
| Type | Mainboard |
| EAN | 4711636114684 |
| Manufacturer no. | 90MB1MCP-M0EAYC |
| CPU Socket | LGA 1851 |
| Max. supported CPUs | 1 |
| Processor - Supported Models | Core Ultra 2xx (Arrow Lake) series |
| Chipset | Intel® B860 |
| Slots - PCIe x16 | 1x PCIe 5.0 x16, 1x PCIe 4.0 x16 (x4 mode) |
| PCIe x1 | 1x PCIe 4.0 x1 |
| BIOS | 256 (128+128) Mb Flash ROM, UEFI AMI BIOS |
| Form factor | µATX |
| use | PC |
| Power supply | ATX12V (24-Pin + 8-Pin) |
| Memory - maximum | 256 GB |
| Memory Type | DDR5 Non-ECC Un-buffered |
| Memory Slots | 4 |
| Max Memory Speed | 8666+ MT/s (OC) |
| Memory Profiles | XMP, AEMP III |
| Connections (external) - Keyboard (PS/2) | 1 |
| Connectors (internal) - SATA | 4 |
| Ports (optional) - USB 3.2 Gen 1 (5Gbps) | 2 |
| SATA Controller | Intel® B860 |
| directly usable RAID levels | 0, 1, 10, 5 |
| USB-Controller | Intel® B860 |
| Sound | Realtek 7.1 Surround Sound |
| LAN | Intel® 2.5Gb Ethernet (I226-V) |
| M.2 Slots | 2 (1x PCIe 5.0 x4, 1x PCIe 4.0 x4) |
| Video Outputs | 1x HDMI 2.1, 2x DisplayPort 1.4 |
| USB (rear) | 1x USB 10Gbps Type-C, 1x USB 10Gbps Type-A |
| Features | 1 x SMBUS header, CSM BIOS |
| More information | BIOS update may be required for latest CPUs |
| Notice | M.2 WiFi slot only: 2230 (Key E, CNVi & PCIe) |
| Warnings and safety information | Attention: Product contains a button cell or coin battery. |