ASUS Prime B860M-A-CSM Micro-ATX Motherboard, LGA 1851, Intel B860, DDR5
£129.99 Original price was: £129.99.£121.99Current price is: £121.99. ex VAT
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About This Item
- Intel LGA 1851 socket supporting Intel Core Ultra Processors Series 2
- DDR5-SDRAM memory support up to 256 GB across four DIMM slots
- Micro-ATX form factor with Intel B860 chipset architecture
- Comprehensive storage options including two M.2 slots and four SATA III connectors
- Integrated 2.5 Gigabit Ethernet LAN alongside multiple USB 3.2 and USB 2.0 ports
- Realtek 7.1-channel audio output with S/PDIF out connectivity
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ASUS Prime B860M-A-CSM – Advanced Intel Core Ultra Integration
When building a compact workstation or daily driver, our team recommends the ASUS Prime B860M-A-CSM Micro-ATX Motherboard, LGA 1851, Intel B860, DDR5 for demanding environments. This platform suits professionals and enthusiasts who require reliable performance for modern productivity applications. Because it supports advanced Intel processors, you gain immediate access to high-efficiency computing and intelligent tuning capabilities.
Essential technical metrics
| Metric | Spec. |
|---|---|
| Socket | LGA 1851 |
| Chipset | Intel B860 |
| Form Factor | micro ATX |
| Memory Support | DDR5-SDRAM (up to 256 GB) |
| Expansion Slots | PCI Express 4.0 |
| Network | 2.5 Gigabit Ethernet |
Advanced memory routing for DDR5 speeds
We find that high-speed memory dramatically improves system responsiveness. This board supports high-capacity DDR5 modules across four dual-channel slots. Because trace layouts are carefully shielded, you experience stable signal integrity even when running demanding memory profiles.
Comprehensive cooling architecture
System stability relies heavily on thermal management. We appreciate the onboard VRM heatsinks and multiple fan headers included on this layout. Because you can monitor temperatures via intuitive software, your hardware remains cool during sustained workloads.
Robust connectivity for modern peripherals
Data transfer speeds dictate modern workflow efficiency. You gain multiple USB ports, including high-bandwidth Type-C connections for external storage. Also, the integrated 2.5 Gigabit Ethernet port ensures fast wired network connectivity without bottlenecks.
Before you order
- Confirm your processor belongs to the compatible Intel Core Ultra (Series 2) family.
- Confirm your chassis accommodates a standard micro ATX form factor.
- Confirm your memory modules are DDR5-SDRAM type.
Frequently Asked Questions
Q: Which socket does this motherboard use?
A: It uses the LGA 1851 socket for compatible processors.
Q: What memory type is supported?
A: It supports DDR5-SDRAM memory modules.
Q: Does this model include built-in Wi-Fi?
A: No, wireless networking is not included.
Q: What form factor is the layout?
A: It follows the micro ATX standard.
Q: How many M.2 slots are available?
A: It features two M.2 M slots for storage drives.
Our verdict
If you need a reliable micro ATX foundation for a modern Intel build, we consider this model a sensible choice. It balances everyday stability with professional connectivity features.
| Internal I/O | |
|---|---|
| Number of M.2 (M) slots | 2 |
| Thunderbolt headers | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
| 12V power connector | Yes |
| Supported storage drive interfaces | M.2, SATA III |
| USB 2.0 connectors | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 1 |
| TPM connector | Yes |
| S/PDIF out connector | Yes |
| Number of SATA III connectors | 4 |
| Number of COM connectors | 1 |
| Number of chassis fan connectors | 3 |
| Front panel audio connector | Yes |
| EPS power connector (8-pin) | Yes |
| CPU fan connector | Yes |
| Chassis intrusion connector | Yes |
| ATX Power connector (24-pin) | Yes |
| Number of CPU fan connectors | 1 |
| Technical details | |
| Motherboard chipset family | Intel |
| Motherboard chipset | Intel B860 |
| Parallel processing technology support | Not supported |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Audio | |
| Audio output channels | 7.1 channels |
| Performance | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Motherboard chipset family | Intel |
| Motherboard chipset | Intel B860 |
| RAID levels | 0, 1, 5, 10 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Processor | |
| Processor manufacturer | Intel |
| Compatible processor series | Intel Core Ultra (Series 2) |
| Processor socket | LGA 1851 (Socket V1) |
| Memory | |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Supported memory types | DDR5-SDRAM |
| Memory channels | Dual-channel |
| Maximum internal memory | 256 GB |
| Unbuffered memory | Yes |
| Supported memory clock speed (max) | 8666 MHz |
| ECC сompatibility | Non-ECC |
| Storage controllers | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| RAID levels | 0, 1, 5, 10 |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| Graphics | |
| Parallel processing technology support | Not supported |
| Rear panel I/O ports | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 2.0 ports quantity | 4 |
| Microphone in | Yes |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| DisplayPorts quantity | 2 |
| USB 3.2 Gen 2x2 Type-C ports quantity | 1 |
| Line-in | Yes |
| Network | |
| Ethernet LAN | Yes |
| Wi-Fi | No |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Top Wi-Fi standard | Not available |
| Features | |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Motherboard chipset family | Intel |
| Motherboard chipset | Intel B860 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Product colour | Multicolour |
| Expansion slots | |
| Number of M.2 (M) slots | 2 |
| PCI Express x1 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| BIOS | |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Packaging data | |
| Package width | 275 mm |
| Package depth | 275 mm |
| Package height | 67.5 mm |
| Package weight | 1.36 kg |
| Software | |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Weight & dimensions | |
| Height | 50 mm |
| Package width | 275 mm |
| Package depth | 275 mm |
| Package height | 67.5 mm |
| Package weight | 1.36 kg |
| Weight | 815 g |
| Width | 244 mm |
| Depth | 244 mm |
| Other features | |
| Height | 50 mm |
| Package width | 275 mm |
| Package depth | 275 mm |
| Package height | 67.5 mm |
| Package weight | 1.36 kg |
| Weight | 815 g |
| PCI Express x1 (Gen 4.x) slots | 1 |
| Identifiers | |
| Distributor SKUs | MBD-90MB1K00-M0EAYC, 11508280, 126206, PRIME B860M-A-CSM, 544141, STD10219416, 2110374, CL90MB1K00-M0EAYC |

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