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header-product Motherboard Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX
101.99 €

Motherboard Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX

Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 1
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 2
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 3
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 4
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 5
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 1
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 2
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 3
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 4
Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ Photo 5
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Motherboard Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX

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Short description

The Asrock B550M Pro4 motherboard supports AMD Ryzen 3000 Series processors with Socket AM4. It features DDR4-SDRAM memory support with a maximum capacity of 128 GB across DIMM slots. The board offers M.2 and SATA III interfaces for HDD and SSD storage, and supports RAID levels 0, 1, and 10. With CrossFireX technology, it enables parallel processing and supports resolutions up to 5120 x 2880 pixels. The Gigabit Ethernet interface is powered by a Realtek RTL8111H LAN controller.
Available for order: 5 pcs.
Warranty: 2 Years
SKU: 3504850
free shipment

Cheapest delivery:

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Cost

1.89 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
10.07.2026 {{selectedOffer.officeDeliveryString}}
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15.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.47 kg)
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From 1.89 €
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36 months installment: from 2.83 euros per month
Price for companies: 84.29€ Price is valid only for legal clients
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Product information

Description

The ASRock B550M Pro4 is a micro‑ATX motherboard for AMD Socket AM4 processors based on the AMD B550 chipset. It supports DDR4 memory up to 128 GB across four DIMM slots, dual M.2 storage (including Type 22110 NVMe) and multiple SATA III ports. The board includes reinforced PCIe slots, dual USB 3.2 Gen2 Type‑A and Type‑C on the rear I/O, Gigabit LAN and integrated audio with Nahimic enhancements for directional sound awareness.

Advantages

The board uses an 8‑phase power design with premium 50A power chokes and 2oz copper PCB layers to improve voltage delivery, thermal performance and stability for sustained workloads and overclocking. Dual M.2 slots (one Hyper M.2 supporting PCIe Gen4 x4 and one supporting PCIe Gen3/SATA) and M.2 armors provide high‑speed storage support and thermal protection. Onboard RGB and addressable RGB headers enable synchronized lighting, while reinforced steel PCIe slot and a Post Status Checker simplify installation and troubleshooting.

Suitable for

  • Desktop PC builders using AMD Ryzen processors (Socket AM4)
  • Mid‑range gaming systems with single GPU configurations
  • Workstations requiring fast NVMe storage and up to 128 GB DDR4 memory
  • Systems needing integrated RGB lighting control and Wi‑Fi module expansion (M.2 Key E)

Key specifications

  • Form factor: Micro ATX
  • Chipset: AMD B550
  • CPU socket: Socket AM4 (supports AMD Ryzen 3000 series and compatible CPUs)
  • Memory: 4× DIMM DDR4, up to 128 GB
  • Storage: Dual M.2 (one Type 22110, Hyper M.2 PCIe Gen4 x4; one PCIe Gen3 x2 / SATA3), multiple SATA III ports
  • Expansion slots: 1× PCIe x16 (reinforced), 1× PCIe x1
  • Rear I/O: Dual USB 3.2 Gen2 (Type‑A + Type‑C), Gigabit LAN (Realtek RTL8111H), audio with Nahimic
  • Additional: M.2 (Key E) slot for Wi‑Fi, Post Status Checker

How to use

Install the B550M Pro4 into a compatible micro‑ATX case and secure it to the standoffs. Fit an AM4 CPU and apply appropriate cooling, populate up to four DDR4 DIMMs according to the motherboard manual for optimal channel configuration, and install storage devices into M.2 sockets or SATA ports. Connect front panel, power, and peripheral headers, then attach any RGB devices to the onboard RGB or addressable RGB headers. For wireless networking, install an M.2 Key E Wi‑Fi module and attach antennas if required. Power on and enter BIOS to verify device detection, configure memory/XMP and storage modes, and update firmware if necessary.

Usage recommendations

Use quality power supplies and adequate chassis airflow to maximise stability and to keep VRM and M.2 temperatures low. When installing high‑performance NVMe drives, fit the M.2 armor or enable airflow over the slots. Follow the motherboard manual for correct memory slot population and PCIe device seating to avoid configuration issues.

Specifications

Motherboard form factor:
Micro ATX
Motherboard chipset:
AMD B550
Component for:
PC
Processor socket:
Socket AM4
Number of memory slots:
4
Maximum internal memory:
128 GB
PCI Express x1 (Gen 3.x) slots:
1
PCI Express x16 (Gen 3.x) slots:
1
Weight:
0.465 kg
Supported memory types:
DDR4-SDRAM
All features

Features

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

Processor manufacturer:
AMD
Maximum number of SMP processors:
1
Processor socket:
Socket AM4

Memory

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

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

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

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

Internal I/O

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
Number of Parallel ATA connectors:
0
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:
0
Number of SATA II connectors:
6
USB 3.2 Gen 2 (3.1 Gen 2) connectors:
0
Front panel connector:
Yes
12V power connector:
Yes
RGB LED pin header:
Yes

Rear panel I/O ports

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
DVI-D ports quantity:
0
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 1 (3.1 Gen 1) Type-C ports quantity:
0
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

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

BIOS

BIOS memory size:
256 Mbit
BIOS type:
UEFI AMI
ACPI version:
5.1
System Management BIOS (SMBIOS) version:
2.3

Weight & dimensions

Width:
244 mm
Depth:
244 mm

Other features

Supported processor sockets:
Socket AM4
Weight:
0.465 kg
Height:
70 mm
DisplayPort version:
1.4
Audio chip:
Realtek ALC1200

Packaging content

Cables included:
SATA
Drivers included:
Yes

Logistics data

Harmonized System (HS) code:
84733020

Description

Machine translation. Load original

Reasons to buy

XXL Aluminum Alloy Heatsink

Extra large aluminum alloy heat sinks that effectively take away heat from the MOSFET and chipset so that your whole system may perform more stably.

XXL Aluminum Alloy Heatsink

Sapphire Black PCB

Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.

Sapphire Black PCB

High Density Glass Fabric PCB

High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.

High Density Glass Fabric PCB

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Customer questions

FAQ

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

The price is 101.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 10.07.2026 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. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Motherboard Asrock B550M Pro4, 90-MXBDK0-A0UAYZ online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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.
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