# Motherboard ASRock B850M‑X R2.0 micro ATX — AMD B850, Socket AM5, DDR5, 2×M.2, 2.5Gb LAN

**URL:** https://aio.lv/en/product--asrock-90-mxbsg0-a0uayz--11425201
**Data updated:** 2026-01-21 11:10 (EET)
**Category:** Motherboards
**Manufacturer:** ASROCK
**Manufacturer code:** 90-MXBSG0-A0UAYZ
**EAN:** 4711581490758
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 113.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 93.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asrock-90-mxbsg0-a0uayz--11425201

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

ASRock B850M‑X R2.0 is a micro ATX motherboard with AMD B850 chipset and Socket AM5 support for AMD Ryzen 9000 series. It accepts up to 128 GB DDR5 across 2 DIMM slots (dual‑channel), offers 2 M.2 slots (PCIe 5.0 + PCIe 4.0), 4 SATA III ports, one PCIe x16 (Gen5) and PCIe x1, HDMI 2.1 and DisplayPort 1.4, Realtek ALC897 7.1 audio, and 2.5Gb Ethernet. Ideal for compact gaming and productivity builds; SATA and PCIe storage, RAID and UEFI BIOS supported.

## Long description

The ASRock B850M-X R2.0 is a Micro ATX motherboard based on the AMD B850 chipset with Socket AM5 support for AMD Ryzen 7000, 8000 and 9000 series processors. It supports up to 128 GB of DDR5 memory across two slots, offers M.2 and SATA III storage options, and integrates a 2.5 Gb/s LAN port and front USB 3.2 Gen1 Type-C header for contemporary connectivity in compact builds.
Advantages
Robust power delivery with a multi-phase design and Dr.MOS components ensures stable CPU power and improved thermal efficiency for demanding workloads. A 6-layer PCB enhances signal integrity and supports higher memory overclocking potential. PCIe Gen5-capable M.2 support provides up to 128 Gb/s bandwidth for next-generation SSDs, while reinforced steel PCIe slots and an aluminum heatsink contribute to mechanical strength and thermal management. Onboard Polychrome RGB and SignalRGB compatibility enable unified lighting control.
Suitable for
 Compact gaming PCs using AMD Ryzen AM5 processors
 Home and small office productivity systems
 Content creators needing fast networking and storage
 Systems that require DDR5 memory and M.2 PCIe Gen5 SSDs
Key specifications
 Form factor: Micro ATX
 Chipset: AMD B850
 Processor socket: Socket AM5 (AMD Ryzen 7000/8000/9000 series compatible)
 Memory: 2 × DDR5 slots, up to 128 GB
 Storage: M.2 (PCIe Gen5 capable) and SATA III ports
 LAN: Dragon 2.5 Gb/s Ethernet
 Front panel: USB 3.2 Gen1 Type-C header
 Cooling: Aluminum heatsink on VRM
 Expansion: Reinforced steel PCIe slot (PCIe 5.0 compatible)
 RGB: Polychrome RGB and addressable headers, SignalRGB support
How to use
Install the motherboard into a compatible Micro ATX case and mount a Socket AM5 CPU per the processor manufacturer’s installation instructions. Populate DDR5 memory modules into the two DIMM slots, observing recommended slot population for dual-channel operation. Connect M.2 SSD(s) and SATA devices as required, attach the power supply 24-pin and CPU power connectors, and connect front-panel headers including the USB Type-C header if the case supports it. Install graphics card(s) into the reinforced PCIe slot and apply appropriate cooling to maintain thermal stability.
Usage recommendations
To achieve stable DDR5 overclocking, use memory modules with Intel XMP or AMD EXPO profiles when available, update the motherboard BIOS to the latest version for best processor and memory compatibility, and ensure adequate case airflow to support the aluminum heatsink and VRM cooling.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | Micro ATX |
| Motherboard chipset | AMD B850 |
| Component for | PC |
| Audio output channels | 7.1 |
| Windows operating systems supported | Windows 11 x64, Windows 10 x64 |
| Motherboard chipset family | AMD |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | AMD |
| Processor socket | Socket AM5 |

### 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 |
| ECC сompatibility | ECC & 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 x16 (Gen 5.x) slots | 1 |

### 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 |
| Front panel audio connector | Yes |
| TPM connector | Yes |
| EPS power connector (8-pin) | Yes |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 1 |
| 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 |
|---|---|
| USB 2.0 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| 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 1 (3.1 Gen 1) Type-C ports quantity | 1 |

### Storage controllers

| Feature | Value |
|---|---|
| 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 | 226 mm |

### Other features

| Feature | Value |
|---|---|
| DisplayPort version | 1.4 |

## FAQ

### How much does the ASRock B850M‑X R2.0 micro ATX motherboard cost, and is it available for purchase?

The price is 113.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 185 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 15.07.2026 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 ASRock B850M‑X R2.0 micro 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 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?

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, 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

https://aio.lv/img/cache/product/11425201/66568490_large.webp