# Motherboard Asrock B850 Pro-A WiFi AMD B850 Socket AM5 ATX

**URL:** https://aio.lv/en/product--asrock-90-mxbqn-a0uayz--11247609
**Data updated:** 2025-09-05 08:04 (EEST)
**Category:** Motherboards
**Manufacturer:** ASROCK
**Manufacturer code:** 90-MXBQN-A0UAYZ
**EAN:** 4711581490192
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 141.99 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 117.35 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asrock-90-mxbqn-a0uayz--11247609

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The Asrock B850 Pro-A WiFi motherboard features the AMD B850 chipset and Socket AM5, supporting AMD Ryzen 7000, 8000, and 9000 series processors. It supports DDR5-SDRAM memory up to 256 GB with DIMM slots. The board offers PCI Express 4.0 and 5.0, SATA III interfaces for HDD and SSD storage, and RAID levels 0, 1, and 10. With a maximum resolution of 3840 x 2160 pixels and USB Type-A and Type-C connectors, it provides excellent connectivity and performance for modern computing needs.

## Long description

The ASRock B850 Pro-A WiFi is an ATX motherboard with the AMD B850 chipset and Socket AM5, designed for desktop PCs using AMD Ryzen 7000, 8000 and 9000 series processors. It supports up to 256 GB DDR5 memory across four DIMM slots, PCIe Gen5 and Gen4 M.2 storage, SATA III drives and RAID 0/1/10. The board integrates Wi‑Fi 6E, 2.5 Gb/s LAN, abundant USB including a front-panel USB 3.2 Gen2x2 Type‑C header, and RGB headers for system lighting control.
Advantages
The motherboard features a robust 14+2+1 power phase design with Dr.MOS and Hi‑Density power connectors for stable CPU power delivery and improved overclocking potential. An 8‑layer PCB and optimized aluminum heatsinks support lower operating temperatures and higher energy efficiency. High-speed storage support includes PCIe Gen5 M.2 (up to 128 Gb/s) and PCIe Gen4 x4 M.2 slots. Network connectivity is provided by Wi‑Fi 6E and Dragon 2.5 Gb/s LAN, while extensive USB connectivity and reinforced PCIe steel slots enhance durability and expandability.
Suitable for
Building a mid-to-high performance desktop with AMD Ryzen 7000/8000/9000 CPUs
Systems requiring fast NVMe storage (PCIe Gen5/Gen4 M.2)
Content creation, streaming and online gaming with improved networking (Wi‑Fi 6E, 2.5 Gb/s LAN)
Memory overclocking using DDR5 XMP/AMD EXPO profiles
PCs needing multiple USB ports and USB Type‑C front-panel connectivity
Key specifications
Form factor: ATX
Chipset: AMD B850
CPU socket: Socket AM5 (supports AMD Ryzen 7000/8000/9000)
Memory: 4× DIMM, DDR5‑SDRAM, up to 256 GB, XMP/EXPO support
Power design: 14+2+1 VRM with Dr.MOS and Hi‑Density power connectors
PCB: 8‑layer PCB
M.2: PCIe Gen5 M.2 (128 Gb/s) and PCIe Gen4 x4 M.2 support
LAN: Dragon 2.5 Gb/s Ethernet
Wireless: Wi‑Fi 6E 802.11ax (6 GHz support)
USB: Front-panel USB 3.2 Gen2x2 Type‑C header (up to 20 Gbps), multiple USB Type‑A/C ports
Graphics: USB Type‑C with DP‑alt mode for display output
RGB: Onboard RGB and addressable headers, Polychrome RGB and SignalRGB support
Expansion: Reinforced steel PCIe slot (PCIe 5.0 compatible)
Storage: SATA III, RAID 0/1/10 support
How to use
Install the motherboard into an ATX-compatible case and connect the Socket AM5 CPU, DDR5 memory modules, and required storage devices (M.2 and SATA). Attach the power supply using the Hi‑Density CPU and ATX power connectors and connect cooling fans to the PWM/DC headers; the board will auto-detect fan mode. Use the BIOS to enable XMP or AMD EXPO profiles for DDR5 memory overclocking if supported by the modules. For BIOS updates, use the BIOS Flashback feature with a USB drive and power supply if necessary. Install network and chipset drivers; the board includes preinstalled LAN driver support to simplify initial setup.
Usage recommendations
For stable overclocking and long-term reliability, use high-quality power supplies capable of delivering sustained current, ensure adequate case airflow with properly configured fan curves (use ASRock Fan‑Tastic Tuning to optimize), and verify that memory modules support Intel XMP or AMD EXPO before enabling profiles. Keep BIOS up to date for best compatibility with newer Ryzen processors.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | ATX |
| Motherboard chipset | AMD B850 |
| Component for | PC |
| Certification | FCC, CE, ErP/EuP |
| Audio output channels | 7.1 |
| Windows operating systems supported | Windows 11 x64, Windows 10 x64 |
| Motherboard chipset family | AMD |

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

### Processor

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

### 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 |
| ECC сompatibility | ECC & non-ECC |

### Expansion slots

| Feature | Value |
|---|---|
| Number of M.2 (M) slots | 4 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 5.x) slots | 1 |
| 1st M.2 largest key size | 2280 |
| 2nd M.2 largest key size | 2280 |
| 3rd M.2 largest key size | 2280 |
| 4th M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| 3rd M.2 highest PCI Express generation | 4.0 |
| 4th M.2 highest PCI Express generation | 4.0 |

### Graphics

| Feature | Value |
|---|---|
| Maximum resolution | 3840 x 2160 |
| Parallel processing technology support | Not supported |
| HDCP | Yes |

### Network

| Feature | Value |
|---|---|
| Bluetooth version | 5.2 |
| Ethernet LAN | Yes |
| Bluetooth | Yes |
| LAN controller | Dragon RTL8125BG |
| Wi-Fi | Yes |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Top Wi-Fi standard | Wi-Fi 6E (802.11ax) |

### 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 | 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 | 1 |
| Number of SATA III connectors | 4 |
| 12V power connector | Yes |
| RGB LED pin header | Yes |
| USB 3.2 Gen 2x2 connectors | 1 |
| Number of RGB LED pin headers | 1 |
| Number of CPU fan connectors | 2 |
| Number of water pump connectors | 1 |
| Number of EPS power connectors (8-pin) | 2 |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| Line-in | Yes |
| USB connector type | USB Type-C, USB Type-A |
| USB 2.0 ports quantity | 6 |
| Ethernet LAN (RJ-45) ports | 1 |
| Headphone outputs | 3 |
| Microphone in | Yes |
| WiFi-AP antenna jack | 2 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |

### Storage controllers

| Feature | Value |
|---|---|
| RAID levels | 10, 1 |
| Supported storage drive types | HDD & SSD |
| RAID support | Yes |
| Number of storage drives supported | 8 |
| Supported storage drive interfaces | PCI Express 4.0, PCI Express 5.0, 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 |
|---|---|
| Supported processor sockets | Socket AM5 |
| Wi-Fi standards | 802.11g, 802.11b, 802.11a, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6E (802.11ax), Wi-Fi 6 (802.11ax) |
| Audio chip | Realtek ALC897 |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | SATA |
| Antenna included | Yes |

## FAQ

### How much does the Motherboard Asrock B850 Pro-A WiFi, 90-MXBQN-A0UAYZ cost, and is it available for purchase?

The price is 141.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 261 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 10.08.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### 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.

### Where can I download the instructions for Motherboard Asrock B850 Pro-A WiFi, 90-MXBQN-A0UAYZ?

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/11247609/65439642_large.webp