# Motherboard Asrock B860M-X Intel B860 LGA 1851 micro ATX DDR5 128GB

**URL:** https://aio.lv/en/product--asrock-90-mxbrx-a0uayz--11613455
**Data updated:** 2025-12-08 08:15 (EET)
**Category:** Motherboards
**Manufacturer:** ASROCK
**Manufacturer code:** 90-MXBRX-A0UAYZ
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Asrock B860M-X motherboard features an Intel B860 chipset and supports Intel Core Ultra processors. It has 4 DIMM slots for DDR5 memory up to 128GB, M.2 and SATA III interfaces for HDD and SSD storage, and 2.5 Gigabit Ethernet for fast networking.

## Long description

The ASRock X-Series microATX motherboard delivers a compact, balanced solution for users who need reliable performance and versatile features. Designed to support Intel Core Ultra Processors (Series 2) on LGA1851, the board accommodates DDR5 memory, modern storage options including a PCIe Gen5 Blazing M.2 slot, and dual graphics outputs (HDMI + DisplayPort). Built with a 6-layer PCB and an aluminum heatsink, it targets stable signal integrity, improved thermal management, and efficient power delivery for everyday computing and professional workloads.
Advantages
The 6-layer PCB enhances signal stability and energy efficiency, which helps lower operating temperatures and supports aggressive DDR5 memory overclocking. Native support for Intel XMP and AMD EXPO profiles simplifies memory overclocking when compatible modules are installed. The PCIe Gen5 Blazing M.2 slot offers up to 128 Gb/s bandwidth for next-generation NVMe SSDs. An aluminum heatsink improves heat dissipation under heavy load. Integrated 2.5 Gb/s LAN increases network throughput compared with standard Gigabit Ethernet. Onboard and addressable RGB headers plus SignalRGB and Polychrome RGB compatibility enable synchronized lighting across compatible components. The board also provides convenient features such as Auto Driver Installer and BIOS Flashback for easier setup and firmware updates.
Key specifications
CPU socket: Intel LGA1851 (Intel Core Ultra Series 2)
Power design: 7+1+1+1+1 power phase
Memory: 2 x DDR5 DIMM, dual channel, up to 9066+ (OC), maximum 128 GB
PCIe slots: 1 x PCIe 4.0 x16, 1 x PCIe 4.0 x4, 1 x PCIe 4.0 x1
M.2 and storage: 1 Blazing M.2 (PCIe Gen5 x4), 1 Hyper M.2 (PCIe Gen4 x4), M.2 Key for WiFi, 4 x SATA3
USB: 1 x USB 3.2 Gen2x2 Type-C (rear), 1 x USB 3.2 Gen1 Type-C (front), 5 x USB 3.2 Gen1 (3 rear, 2 front), 6 x USB 2.0 (2 rear, 4 front)
LAN: Realtek 2.5 Gb/s Ethernet
Audio: Realtek ALC897 7.1-channel HD audio codec
Form factor: Micro ATX (B860 chipset)
BIOS: UEFI AMI 256 Mbit with BIOS Flashback support
Storage features: SATA III and M.2 NVMe support, RAID support
How to use
Install an Intel Core Ultra (Series 2) processor into the LGA1851 socket, insert up to two DDR5 DIMMs according to the dual-channel slot recommendations, and mount storage devices to the appropriate M.2 or SATA connectors. Connect power and front/rear USB devices, then attach display via HDMI or DisplayPort. Use the Auto Driver Installer (preinstalled LAN driver) to update remaining drivers: install the Auto Driver Installer, run driver updates, and reboot. To update firmware, use BIOS Flashback by placing the BIOS file on a USB drive and following the board’s BIOS Flashback procedure—no CPU or memory required for the update.
Recommendations
For best results, use Intel XMP or AMD EXPO-capable DDR5 modules when enabling XMP/EXPO profiles, install a high-performance NVMe SSD to leverage PCIe Gen5 bandwidth, and maintain adequate case airflow to maximize thermal performance from the aluminum heatsink and ensure system stability.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | Micro ATX |
| Motherboard chipset | Intel B860 |
| Component for | PC |
| Audio output channels | 7.1 |
| Windows operating systems supported | Windows 11 x64 |
| Motherboard chipset family | Intel |

| Feature | Value |
|---|---|
| Product colour | Black |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | Intel |
| Processor socket | LGA 1851 (Socket V1) |

### Memory

| Feature | Value |
|---|---|
| Number of memory slots | 2 |
| Maximum internal memory | 128 GB |
| Supported memory types | DDR5-SDRAM |
| Memory channels | Dual-channel |
| Unbuffered memory | Yes |
| Memory slots type | DIMM |
| Supported memory clock speed (max) | 9066 MHz |
| ECC сompatibility | non-ECC |

### Expansion slots

| Feature | Value |
|---|---|
| Number of M.2 (M) slots | 1 |
| PCI Express x1 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x4 (Gen 4.x) slots | 1 |

### Graphics

| Feature | Value |
|---|---|
| On-board graphics card | Yes |

### Network

| Feature | Value |
|---|---|
| Ethernet LAN | Yes |
| LAN controller | Dragon RTL8125BG |
| Wi-Fi | No |
| Ethernet interface type | 2.5 Gigabit Ethernet |

### Internal I/O

| Feature | Value |
|---|---|
| USB 2.0 connectors | 2 |
| CPU fan connector | Yes |
| ATX Power connector (24-pin) | Yes |
| Number of chassis fan connectors | 2 |
| Front panel audio connector | Yes |
| TPM connector | Yes |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| EPS power connector (8-pin) | Yes |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| RGB LED pin header | Yes |
| Number of CPU fan connectors | 2 |
| Number of EPS power connectors (8-pin) | 1 |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| Line-in | Yes |
| USB 2.0 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| Microphone in | Yes |
| HDMI ports quantity | 1 |
| DisplayPorts quantity | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 3 |
| USB 3.2 Gen 2x2 Type-C ports quantity | 1 |

### Storage controllers

| Feature | Value |
|---|---|
| RAID levels | 1, 5, 10 |
| Supported storage drive types | HDD & SSD |
| RAID support | Yes |
| Supported storage drive interfaces | SATA III, M.2 |

### BIOS

| Feature | Value |
|---|---|
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |

### Weight & dimensions

| Feature | Value |
|---|---|
| Width | 244 mm |
| Depth | 218 mm |

### Other features

| Feature | Value |
|---|---|
| DisplayPort version | 1.4 |
| Audio chip | Realtek ALC897 |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | SATA |

## FAQ

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### What is the warranty period?

All ASROCK products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ASROCK service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

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### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: motherboard form factor, motherboard chipset, component for, processor socket, number of memory slots, maximum internal memory, supported memory types, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

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