# Motherboard Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX

**URL:** https://aio.lv/en/product--asrock-90-mxbdk0-a0uayz--3511968
**Data updated:** 2026-02-17 11:44 (EET)
**Category:** Motherboards
**Manufacturer:** ASROCK
**Manufacturer code:** 90-MXBDK0-A0UAYZ
**EAN:** 4710483931598
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 97.49 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 80.57 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asrock-90-mxbdk0-a0uayz--3511968

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.89 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Asrock B550M Pro4 motherboard supports AMD Ryzen 3000 Series processors with Socket AM4. It features DDR4-SDRAM memory support up to 128 GB, multiple DIMM slots, and interfaces for M.2 and SATA III storage drives, accommodating both HDD and SSD. With RAID levels 0, 1, and 10, it offers versatile storage options. The board supports CrossFireX technology for enhanced graphics performance and has a maximum resolution of 5120 x 2880 pixels. Equipped with Gigabit Ethernet via Realtek RTL8111H, it ensures fast network connectivity.

## Long description

IT’S TIME FOR B550 MOTHERBOARDS. Everything you need for computing is integrated into this B550 motherboard designed for modern AMD processors. It incorporates advanced audio processing with Nahimic Audio, multiple M.2 slots including support for Type 22110 NVMe SSDs, dual USB 3.2 Gen2 ports (Type-A and Type-C), reinforced PCIe steel slot compatible with PCIe 4.0, and robust power delivery with an 8-phase design and premium 50A power chokes. The board also includes 2oz copper inner layers for improved thermal and power efficiency, onboard and addressable RGB headers with PolyChrome RGB support, an M.2 (Key E) slot for Wi‑Fi modules, and a Post Status Checker for straightforward troubleshooting.
Advantages
The motherboard provides precise 360° audio positioning through Nahimic Audio and a Sound Tracker, enabling directional awareness in games. Its 8 power phase design and premium 50A chokes ensure stable Vcore delivery and improved overclocking headroom while 2oz copper PCB layers lower temperatures and enhance energy efficiency. Dual M.2 support (including Type 22110 and Gen4-capable Hyper M.2) and dedicated M.2 armors protect SSDs and help maintain performance. Reinforced PCIe steel slot improves mechanical strength for heavy graphics cards, and dual USB 3.2 Gen2 ports deliver up to 10 Gbps for fast external devices. The onboard M.2 (Key E) option adds flexible Wi‑Fi connectivity and the Post Status Checker simplifies fault identification at boot.
Key specifications
Chipset: AMD B550
Audio: Nahimic Audio with Sound Tracker (360° audio indicator)
Power design: 8 power phase design with premium 50A power chokes
PCB: 2oz copper inner layers
M.2: Dual M.2 slots, supports Type 22110; Hyper M.2 supports PCIe Gen4 x4; second M.2 supports PCIe Gen3 x2/SATA3
M.2 protection: M.2 armors for thermal stability
PCIe: Reinforced steel PCIe slot (PCIe 4.0 compatible)
USB: Dual USB 3.2 Gen2 rear ports (Type-A + Type-C), up to 10 Gbps
Wireless: M.2 (Key E) slot for Wi‑Fi modules (802.11ac compatible)
Diagnostics: Post Status Checker for CPU/DRAM/VGA/BOOT status at startup
RGB: Onboard RGB header and addressable RGB header with Polychrome RGB support
How to use
Install the motherboard into a compatible ATX/M-ATX case following the manufacturer’s mounting points and connect the CPU, memory modules, and primary storage. Attach NVMe SSDs into the M.2 sockets (ensure correct length support up to Type 22110) and secure them with the provided M.2 armor if available. Connect GPU to the reinforced PCIe slot and attach power cables from the PSU to the 8‑phase power connectors. For audio setup, connect headphones or speakers and configure Nahimic Audio software to enable the Sound Tracker and surround enhancements. Use the onboard USB 3.2 Gen2 Type‑A and Type‑C ports for compatible high-speed devices. If wireless connectivity is required, install an M.2 (Key E) Wi‑Fi module. Use the Post Status Checker at boot to identify any initialization issues and consult the manual for LED codes and troubleshooting steps.
Recommendations
For best results, pair this B550 motherboard with a compatible AMD Ryzen CPU, high-quality DDR4 memory modules, and an NVMe SSD that fits the supported M.2 Type 22110 length. Ensure proper case airflow to benefit from the 2oz copper PCB thermal advantages, and update BIOS and Nahimic drivers to the latest versions for stability and feature support.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | Micro ATX |
| Motherboard chipset | AMD B550 |
| Component for | PC |
| Certification | FCC, CE
ErP/EuP ready (ErP/EuP ready power supply is required) |
| Audio output channels | 7.1 |
| PC health monitoring | CPU, FAN, Temperature, Voltage |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Motherboard chipset family | AMD |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | AMD |
| Maximum number of SMP processors | 1 |
| Processor socket | Socket AM4 |

### Memory

| Feature | Value |
|---|---|
| Number of memory slots | 4 |
| Maximum internal memory | 128 GB |
| Supported memory types | DDR4-SDRAM |
| Supported memory clock speeds | 2133, 2400, 2667, 2933, 3200, 3466, 3600, 3733, 3800, 3866, 4000, 4133, 4200, 4266, 4333, 4400, 4466, 4533, 4600, 4666, 4733 |
| Memory channels | Dual-channel |
| Unbuffered memory | Yes |
| Memory slots type | DIMM |
| Supported memory module capacities | 4GB, 8GB, 16GB, 32GB |
| Supported memory clock speed (max) | 4733 MHz |
| ECC сompatibility | ECC & non-ECC |

### Expansion slots

| Feature | Value |
|---|---|
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| Number of M.2 (M) slots | 3 |
| PCI Express x16 (Gen 4.x) slots | 1 |

### Graphics

| Feature | Value |
|---|---|
| Maximum resolution | 5120 x 2880 |
| Parallel processing technology support | CrossFireX, Quad-GPU CrossFireX |
| DirectX version | 12.0 |
| HDCP | Yes |
| Number of displays supported | 3 |

### Network

| Feature | Value |
|---|---|
| Ethernet LAN | Yes |
| Wake-on-LAN ready | Yes |
| LAN controller | Realtek RTL8111H |
| Wi-Fi | No |
| Ethernet interface type | Gigabit Ethernet |

### Internal I/O

| Feature | Value |
|---|---|
| USB 2.0 connectors | 2 |
| CPU fan connector | Yes |
| Number of COM connectors | 1 |
| 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 | 2 |
| Number of SATA II connectors | 6 |
| Front panel connector | Yes |
| 12V power connector | Yes |
| RGB LED pin header | Yes |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| PS/2 ports quantity | 1 |
| USB 2.0 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| Microphone in | Yes |
| VGA (D-Sub) ports quantity | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |

### Storage controllers

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

### BIOS

| Feature | Value |
|---|---|
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| ACPI version | 5.1 |
| System Management BIOS (SMBIOS) version | 2.3 |

### Weight & dimensions

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

### Other features

| Feature | Value |
|---|---|
| Supported processor sockets | Socket AM4 |
| Weight | 0.465 kg |
| Height | 70 mm |
| DisplayPort version | 1.4 |
| Audio chip | Realtek ALC1200 |

### Packaging content

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

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733020 |

## FAQ

### How much does the Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ cost, and is it available for purchase?

The price is 97.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 433 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 07.07.2026 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 Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ 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, pci express x1 (gen 3.x) slots, pci express x16 (gen 3.x) slots, 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 Motherboard Asrock B550M Pro4, 90-MXBDK0-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/3511968/65417393_large.webp