# Motherboard GIGABYTE B550M K Micro ATX, AMD B550, Socket AM4, 4x DIMM DDR4 up to 128GB, 2x M.2 (PCIe4.0/3.0), HDMI 2.1, Realtek RTL8111H

**URL:** https://aio.lv/en/product--gigabyte-b550m-k--7858760
**Data updated:** 2026-01-21 11:00 (EET)
**Category:** Motherboards
**Manufacturer:** GIGABYTE
**Manufacturer code:** B550M K
**EAN:** 4719331852764
**Warranty:** 3 Years
**Availability:** Available for order
**Price:** 77.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 64.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--gigabyte-b550m-k--7858760

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

GIGABYTE B550M K is a Micro ATX motherboard for Socket AM4 processors (AMD Ryzen 3000 series compatible) based on the AMD B550 chipset. It supports 4 DDR4 DIMM slots up to 128 GB (unbuffered, ECC & non‑ECC) and memory speeds to 4733 MHz, two M.2 slots (one PCIe 4.0, one PCIe 3.0), 4 SATA III ports, RAID 1, Gigabit Ethernet (Realtek RTL8111H), HDMI 2.1 and DisplayPort 1.4 video outputs, Realtek ALC897 7.1 audio, UEFI AMI BIOS and passive cooling. Ideal for compact desktop builds requiring PCIe 4.0 storage and mainstream connectivity.

## Long description

The GIGABYTE B550M K is a Micro ATX motherboard based on the AMD B550 chipset with Socket AM4, designed to support AMD Ryzen 5000 Series processors. It supports up to 128 GB of DDR4 memory across four slots with overclocking potential up to 4733 MHz (OC). The board includes two PCIe 3.0 M.2 slots, Gigabit Ethernet LAN and USB 3.2 Gen1 ports, and offers support for SSDs with RAID 0, 1 and 10 configurations for higher storage performance and redundancy.
Advantages
The B550M K combines a compact Micro ATX form factor with the feature set needed for performance-oriented builds: a modern AMD B550 chipset, four memory slots for up to 128 GB DDR4, dual M.2 NVMe capability and gigabit wired networking. Its support for high-frequency memory (OC) and common RAID modes makes it suitable for systems that require fast storage access and flexible capacity management while keeping a smaller motherboard footprint.
Suitable for
 Gaming PC builds using AMD Ryzen 5000 series CPUs
 Home or office desktops that need reliable wired networking
 Compact workstations or content-creation rigs with M.2 SSD storage
 Systems requiring up to 128 GB DDR4 memory for multitasking
Key specifications
 Form factor: Micro ATX
 Chipset: AMD B550
 Socket: AM4 (supports AMD Ryzen 5000 Series)
 Memory: 4 × DDR4 slots, up to 128 GB, supports up to 4733 MHz (OC)
 Storage: 2 × PCIe 3.0 M.2 slots; SATA ports with RAID 0/1/10 support
 Networking: Gigabit Ethernet LAN
 USB: USB 3.2 Gen1 connectivity
How to use
Install the motherboard into a compatible Micro ATX case and mount an AM4-compatible CPU, cooling solution and memory modules across the four DDR4 slots according to the manual to enable dual-channel operation. Connect NVMe M.2 drives or SATA SSDs/HDDs as needed and configure RAID levels in the BIOS if redundancy or striping is required. Attach power connectors, GPU (if used) and peripherals, then enter BIOS/UEFI to verify memory frequency, boot order and device detection before installing the operating system.
Usage recommendations
For best stability and performance, update the motherboard BIOS to the latest version when using newer Ryzen 5000 CPUs, install matched DDR4 memory modules for dual-channel operation, and use high-quality cooling for both CPU and VRM areas when overclocking memory or CPU.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | Micro ATX |
| Motherboard chipset | AMD B550 |
| Component for | PC |
| Audio output channels | 7.1 |
| Cooling type | Active |
| PC health monitoring | FAN, Temperature, Voltage |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Motherboard chipset family | AMD |
| Power source type | ATX |

| Feature | Value |
|---|---|
| Product colour | Brown |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 5 |
| Processor socket | Socket AM4 |
| Maximum internal memory supported by processor | 128 GB |

### 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, 3400, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400, 4600, 4733 |
| Memory channels | Dodeca-channel |
| Unbuffered memory | Yes |
| Memory slots type | DIMM |
| Supported memory module capacities | 1GB, 2GB, 4GB, 8GB, 16GB, 32GB |
| Supported memory clock speed (max) | 4733 MHz |
| ECC сompatibility | ECC & non-ECC |

### Expansion slots

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

### Graphics

| Feature | Value |
|---|---|
| Maximum resolution | 5120 x 2880 |
| Parallel processing technology support | Not supported |
| DirectX version | 12.0 |
| HDCP | Yes |
| Graphics card family | AMD |
| On-board graphics card | Yes |

### Network

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

### Internal I/O

| Feature | Value |
|---|---|
| USB 2.0 connectors | 1 |
| CPU fan connector | Yes |
| ATX Power connector (24-pin) | Yes |
| Front panel audio connector | Yes |
| Power fan 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 |
| Audio connector | Yes |
| Total number of SATA connectors | 4 |
| Front panel connector | Yes |
| 12V power connector | Yes |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| PS/2 ports quantity | 1 |
| Line-in | Yes |
| USB 2.0 ports quantity | 4 |
| Ethernet LAN (RJ-45) ports | 1 |
| Headphone outputs | 1 |
| Microphone in | Yes |
| 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 |

### Storage controllers

| Feature | Value |
|---|---|
| RAID levels | 1, 10 |
| Supported storage drive types | SSD |
| RAID support | Yes |
| Number of storage drives supported | 6 |
| Supported storage drive interfaces | M.2, SATA |

### Technical details

| Feature | Value |
|---|---|
| Warranty period | 3 year(s) |

### BIOS

| Feature | Value |
|---|---|
| BIOS memory size | 128 Mbit |
| BIOS type | UEFI AMI |
| ACPI version | 5.0 |
| Clear CMOS jumper | Yes |
| Desktop Management Interface (DMI) version | 2.7 |
| System Management BIOS (SMBIOS) version | 2.7 |

### Weight & dimensions

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

### Other features

| Feature | Value |
|---|---|
| Number of HDDs supported | 2 |
| Supported processor sockets | Socket AM4 |
| Package weight | 837 g |
| Height | 35 mm |
| DisplayPort version | 1.4 |

### Packaging content

| Feature | Value |
|---|---|
| Bundled software | Norton® Internet Security (OEM version)
LAN bandwidth management software |
| Batteries included | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 265 mm |
| Package height | 54 mm |
| Package width | 265 mm |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Manganese Dioxide (LiMnO2) |
| Battery type | CR2032 |
| Number of battery cells | 1 |
| Battery weight | 3 g |
| Lithium weight per battery | 0.07 g |

### Logistics data

| Feature | Value |
|---|---|
| Country of origin | China |
| Products per shipping (inner) case | 1 pc(s) |

## FAQ

### How much does the GIGABYTE B550M K Micro ATX motherboard cost, and is it available for purchase?

The price is 77.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 403 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 13.07.2026 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 GIGABYTE B550M K 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 GIGABYTE 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 GIGABYTE 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 GIGABYTE B550M K Micro 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/7858760/65424922_large.webp