ASUS PRIME B860M-K mATX Motherboard | LGA1851 | 2x DDR5 Slots
KEY FEATURES
- Intel LGA 1851 (Socket V1) Intel Core Ultra (Series 2)
- PC micro ATX Intel B860 7.1 channels
- DDR5-SDRAM 2 DIMM Maximum internal memory: 128 GB
- HDD & SSD M.2, SATA III RAID support Number of storage drives supported: 6
- BIOS type: UEFI AMI 256 Mbit
- 2.5 Gigabit Ethernet
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Frequently Asked Questions
What processors are compatible with the ASUS PRIME B860M-K?
How much memory can the ASUS PRIME B860M-K support?
What type of cooling solutions does the ASUS PRIME B860M-K offer?
ASUS PRIME B860M-K mATX Motherboard | LGA1851 | 2x DDR5 Slots
Description
The ASUS PRIME B860M-K delivers Intel's latest B860 chipset in a compact micro ATX design, built around the new LGA1851 socket for Intel Core Ultra Series 2 processors. This board targets builders who need modern platform features without the premium of higher-tier chipsets, making it well-suited for mainstream productivity systems, home office builds, and budget-conscious gaming rigs where space efficiency matters.
Memory capabilities centre on DDR5 support across two DIMM slots, with capacity scaling up to 128GB and speeds reaching 8800+ MT/s when overclocked. Storage connectivity includes two M.2 slots - one PCIe 5.0 slot for the fastest NVMe drives, plus a secondary PCIe 4.0 M.2 slot for additional storage. The single PCIe x16 slot handles graphics cards, while two PCIe x1 slots provide room for expansion cards like Wi-Fi adapters or sound cards.
Setup stays straightforward with standard ASUS PRIME series build quality and an included I/O shield for rear port protection. The board includes an RGB LED pin header for builders wanting to add lighting strips or compatible RGB components. With its focus on core functionality rather than enthusiast extras, this board provides a solid foundation for Intel Core Ultra builds where compact size and reliable operation take priority over extensive connectivity options.
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- Next Business Day: £6.99
- 2 days Delivery: £4.99
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| Processor | |
|---|---|
| Processor manufacturer | Intel |
| Processor socket | LGA 1851 (Socket V1) |
| Compatible processor series | Intel Core Ultra (Series 2) |
| Supported processor sockets | LGA 1851 |
| Memory | |
|---|---|
| Supported memory types | DDR5-SDRAM |
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| ECC сompatibility | Non-ECC |
| Maximum internal memory | 128 GB |
| Unbuffered memory | Yes |
| Storage controllers | |
|---|---|
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| Number of storage drives supported | 6 |
| Number of HDDs supported | 4 |
| RAID support | Yes |
| RAID levels | 0, 1, 5, 10 |
| Graphics | |
|---|---|
| Parallel processing technology support | Not supported |
| Internal I/O | |
|---|---|
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| S/PDIF out connector | Yes |
| Front panel audio connector | Yes |
| Front panel connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of chassis fan connectors | 2 |
| 12V power connector | Yes |
| TPM connector | Yes |
| Number of COM connectors | 1 |
| RGB LED pin header | Yes |
| Rear panel I/O ports | |
|---|---|
| USB 2.0 ports quantity | 2 |
| 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 |
| Ethernet LAN (RJ-45) ports | 1 |
| PS/2 ports quantity | 1 |
| HDMI ports quantity | 1 |
| DisplayPorts quantity | 1 |
| Network | |
|---|---|
| Ethernet LAN | Yes |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Wi-Fi | No |
| Top Wi-Fi standard | Not available |
| Features | |
|---|---|
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | Intel |
| Motherboard chipset | Intel B860 |
| Audio output channels | 7.1 channels |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Expansion slots | |
|---|---|
| PCI Express x1 (Gen 4.x) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| BIOS | |
|---|---|
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Packaging data | |
|---|---|
| Package width | 270 mm |
| Package depth | 263 mm |
| Package height | 51.5 mm |
| Package weight | 1.07 kg |
| Weight & dimensions | |
|---|---|
| Width | 244 mm |
| Depth | 222 mm |
| Packaging content | |
|---|---|
| Cables included | SATA |
Frequently Asked Questions
What processors are compatible with the ASUS PRIME B860M-K?
How much memory can the ASUS PRIME B860M-K support?
What type of cooling solutions does the ASUS PRIME B860M-K offer?
Can I use RAID with the ASUS PRIME B860M-K?
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