# Motherboard Asus PRIME B860-PLUS-CSM ATX Intel B860 LGA 1851 DDR5, 4× DIMM, 256 GB, 2.5 Gb LAN, 3× M.2, USB-C

**URL:** https://aio.lv/en/product--asus-90mb1ka0-m0eayc--11241143
**Data updated:** 2026-01-21 11:08 (EET)
**Category:** Motherboards
**Manufacturer:** Asus
**Manufacturer code:** 90MB1KA0-M0EAYC
**EAN:** 4711387814857
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 199.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 164.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asus-90mb1ka0-m0eayc--11241143

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

ASUS PRIME B860-PLUS-CSM is an ATX motherboard for Intel processors with LGA 1851 socket supporting Intel Core Ultra (Series 2). Based on the Intel B860 chipset, it supports DDR5 memory (4 DIMM slots, up to 256 GB, dual-channel, up to 8666 MHz), three M.2 and SATA storage, RAID 1, 2.5 Gigabit Ethernet, multiple USB ports including one USB 3.2 Gen2x2 Type-C, HDMI and DisplayPort outputs, RGB header and UEFI AMI BIOS. Designed for business and professional PC builds; do not open or modify the board.

## Long description

The ASUS PRIME B860-PLUS-CSM is an ATX motherboard based on the Intel B860 chipset with an LGA 1851 (Socket V1) for Intel Core Ultra processors. It supports DDR5-SDRAM across four DIMM slots for up to 256 GB of system memory, offers M.2 and SATA III storage interfaces with RAID 0/1/5/10 support, and includes a 2.5 Gigabit Ethernet interface. The board is engineered for reliable power delivery, comprehensive cooling options and firmware/software tuning to meet the needs of advanced AI-capable PC builds.
Advantages
The PRIME B860-PLUS-CSM combines a modern LGA 1851 socket and Intel B860 chipset to support the latest Intel Core Ultra processors and high-speed DDR5 memory. Its ATX form factor provides multiple expansion options, while native M.2 and SATA III connectors plus RAID support enable flexible storage configurations. Integrated 2.5 Gb Ethernet delivers faster wired networking compared with standard Gigabit interfaces. Built-in cooling features and stable power design improve component longevity and system stability under sustained loads.
Suitable for
 High-performance desktop builds using Intel Core Ultra processors
 Workstations requiring large DDR5 memory capacity (up to 256 GB)
 Systems needing fast wired networking via 2.5 Gigabit Ethernet
 PC builds that use multiple SSDs/HDDs with RAID 0/1/5/10
Key specifications
 Form factor: ATX
 Chipset: Intel B860
 Processor socket: LGA 1851 (Socket V1)
 Memory: 4 × DIMM, DDR5-SDRAM, up to 256 GB
 Storage interfaces: M.2 and SATA III; RAID 0/1/5/10 supported
 Network: 2.5 Gigabit Ethernet
 Weight: 0.896 kg
How to use
Install the ASUS PRIME B860-PLUS-CSM in a compatible ATX chassis and mount an LGA 1851-compatible Intel Core Ultra processor following the CPU and cooler manufacturer instructions. Populate DDR5 DIMM slots as recommended in the motherboard manual to achieve the desired memory configuration, and connect M.2 drives or SATA devices to the corresponding connectors. Configure storage RAID arrays through the firmware/BIOS if required, and install the latest chipset and network drivers from the ASUS support site for optimal system stability and performance.
Usage recommendations
For reliable operation, use a power supply that meets the system power requirements and ensure adequate case airflow or add case fans to complement the motherboard cooling. Update BIOS and drivers before heavy workloads or AI applications to take advantage of compatibility and performance improvements.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | ATX |
| Motherboard chipset | Intel B860 |
| Component for | PC |
| Audio output channels | 7.1 |
| Windows operating systems supported | Windows 11, Windows 10 x64 |
| Motherboard chipset family | Intel |

| Feature | Value |
|---|---|
| Product colour | Multicolour |

### Processor

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

### Memory

| Feature | Value |
|---|---|
| Number of memory slots | 4 |
| Maximum internal memory | 256 GB |
| Supported memory types | DDR5-SDRAM |
| Memory channels | Dual-channel |
| Unbuffered memory | Yes |
| Memory slots type | DIMM |
| Supported memory clock speed (max) | 8666 MHz |
| ECC сompatibility | non-ECC |

### Expansion slots

| Feature | Value |
|---|---|
| Number of M.2 (M) slots | 3 |
| PCI Express x16 (Gen 4.x) slots | 1 |

### Graphics

| Feature | Value |
|---|---|
| Parallel processing technology support | Not supported |

### Network

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

### Internal I/O

| Feature | Value |
|---|---|
| USB 2.0 connectors | 2 |
| S/PDIF out connector | Yes |
| CPU fan connector | Yes |
| Number of COM connectors | 1 |
| ATX Power connector (24-pin) | Yes |
| Chassis intrusion connector | Yes |
| Number of chassis fan connectors | 4 |
| Front panel audio connector | Yes |
| TPM connector | Yes |
| EPS power connector (8-pin) | Yes |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| Thunderbolt headers | 1 |
| 12V power connector | Yes |
| RGB LED pin header | Yes |
| Number of CPU fan connectors | 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 | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 2 |
| 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 |
| Number of storage drives supported | 7 |
| Supported storage drive interfaces | M.2, SATA III |

### BIOS

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Width | 305 mm |
| Depth | 244 mm |

### Other features

| Feature | Value |
|---|---|
| Number of HDDs supported | 4 |
| Weight | 0.896 kg |
| Package weight | 1558 g |
| Height | 49 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 372 mm |
| Package height | 302 mm |
| Package width | 377 mm |

## FAQ

### How much does the Asus PRIME B860-PLUS-CSM ATX motherboard cost, and is it available for purchase?

The price is 199.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 99 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 09.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Asus PRIME B860-PLUS-CSM ATX motherboard be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Asus 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 Asus 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?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### 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, weight, 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.

### Where can I download the instructions for Asus PRIME B860-PLUS-CSM ATX motherboard?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11241143/65438812_large.webp