GIGABYTE B550M K Motherboard – AMD Ryzen 5000, DDR4-4733, PCIe 4.0/3.0 M.2, 1GbE, USB 3.2 Gen 1

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About This Item

  • AMD B550 chipset for Ryzen 5000 CPUs
  • Micro ATX form factor with passive cooling
  • Up to 4733MHz DDR4 memory support
  • 2x M.2 slots (PCIe 4.0 + PCIe 3.0)
  • 7.1-channel audio with Realtek ALC897 codec

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Description

GIGABYTE B550M K | Micro-ATX AMD Motherboard for Ryzen 5000 CPUs

The GIGABYTE B550M K motherboard delivers robust performance for AMD Ryzen 5000 series CPUs, supporting up to 4733MHz DDR4 memory and dual M.2 storage with PCIe 4.0 and 3.0 speeds. This micro-ATX board combines compact design with advanced connectivity including 1GbE LAN, USB 3.2 Gen 1 ports, and HDMI 2.1 output for modern computing needs.

Slim Specs Table

Metric Spec
CPU Support AMD Ryzen 3000/4000/5000 Series
Memory Support DDR4 up to 4733MHz
PCIe Slots 1x PCIe 4.0 x16, 1x PCIe 3.0 x1
M.2 Slots 2x (1x PCIe 4.0, 1x PCIe 3.0)
LAN 1GbE Realtek RTL8111H

Exceptional Performance for Ryzen 5000 CPUs

Engineered specifically for AMD Ryzen 5000 series processors, this motherboard provides optimal power delivery and thermal management. The B550 chipset ensures seamless compatibility with both current and previous-generation Ryzen CPUs, making it a future-proof investment for your PC build.

High-Speed Memory and Storage Capabilities

With support for up to 128GB of DDR4 memory across four DIMM slots and speeds reaching 4733MHz, this board handles demanding applications and multitasking effortlessly. The dual M.2 slots offer flexible storage options – one supporting PCIe 4.0 for ultra-fast NVMe SSDs and another with PCIe 3.0 compatibility, giving you the best of both worlds for storage performance.

Comprehensive Connectivity Options

The B550M K provides extensive connectivity including four USB 3.2 Gen 1 Type-A ports for high-speed peripherals, HDMI 2.1 with 4K support, and DisplayPort 1.4. The integrated 1GbE LAN controller ensures reliable wired internet connectivity, while the 7.1-channel audio delivers immersive sound quality for gaming and media consumption.

Compact Micro-ATX Form Factor

Designed for space-efficient builds, the micro-ATX form factor fits comfortably in smaller cases while maintaining full functionality. The passive cooling solution operates silently while keeping components at optimal temperatures, making it ideal for home offices, media centers, or gaming setups where noise reduction matters.

Box contents

  • GIGABYTE B550M K motherboard
  • I/O shield
  • User manual
  • Driver disk
  • SATA cables
  • Screws
  • CR2032 battery
  • Norton® Internet Security (OEM version)

Check before you buy

  • Confirm your CPU is compatible with Socket AM4 (Ryzen 3000/4000/5000 Series)
  • Verify your case supports micro-ATX motherboard dimensions (244mm x 244mm)
  • Check that your power supply has the required 24-pin ATX and 8-pin EPS connectors
  • Ensure you have appropriate cooling for your specific Ryzen processor

Frequently Asked Questions

Q: Does this motherboard support PCIe 4.0 graphics cards?

A: Yes, the PCIe x16 slot supports PCIe 4.0 for compatible graphics cards.

Q: Can I use this with an Intel processor?

A: No, this motherboard only supports AMD Ryzen processors with Socket AM4.

Q: What is the maximum RAM capacity?

A: The motherboard supports up to 128GB of DDR4 memory across four DIMM slots.

Q: Does it have built-in Wi-Fi?

A: No, this model does not include built-in Wi-Fi – you’ll need a Wi-Fi adapter for wireless connectivity.

Q: What RAID configurations are supported?

A: The motherboard supports RAID 0, RAID 1, and RAID 10 configurations for both M.2 and SATA drives.

The Consultant’s verdict & warranty

The GIGABYTE B550M K offers excellent value for users building systems around AMD Ryzen 5000 CPUs, combining modern features with reliable performance in a compact micro-ATX package. Its support for high-speed memory, dual M.2 storage, and comprehensive connectivity makes it suitable for gaming, content creation, and everyday computing. Covered by the standard Manufacturer Warranty.

Specifications
Internal I/O
Number of M.2 (M) slots2
Front panel connectorYes
12V power connectorYes
Supported storage drive interfacesM.2, SATA
USB 2.0 connectors1
USB 3.2 Gen 1 (3.1 Gen 1) connectors1
TPM connectorYes
Number of SATA III connectors4
Number of chassis fan connectors1
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
Number of CPU fan connectors1
Number of EPS power connectors (8-pin)1
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Supported processor socketsSocket AM4
PC health monitoringFan, Temperature, Voltage
Parallel processing technology supportNot supported
HDMI version2.1
Cooling typePassive
Motherboard form factormicro ATX
Component forPC
Warranty period3 year(s)
Audio
Audio output channels7.1 channels
Performance
Number of HDDs supported2
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
RAID levels0, 1, 10
Supported processor socketsSocket AM4
PC health monitoringFan, Temperature, Voltage
Cooling typePassive
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 3000 Series, AMD Ryzen 4000 Series, AMD Ryzen 5000 Series
Supported processor socketsSocket AM4
Processor socketSocket AM4
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR4-SDRAM
Memory channelsDodeca-channel
Supported memory clock speeds4733,4600,4400,4266,4133,4000,3866,3733,3600,3466,3400,3200,2933,2667,2400,2133 MHz
Maximum internal memory128 GB
Unbuffered memoryYes
Supported memory clock speed (max)4733 MHz
ECC сompatibilityECC & Non-ECC
Maximum internal memory per slot32 GB
Storage controllers
Number of HDDs supported2
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, SATA
RAID levels0, 1, 10
Number of storage drives supported6
RAID supportYes
Graphics
Parallel processing technology supportNot supported
Maximum resolution5120 x 2880 pixels
HDCPYes
DirectX version12.0
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4
DisplayPort version1.4
USB 2.0 ports quantity4
PS/2 ports quantity1
Microphone inYes
Headphone outputs1
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DisplayPorts quantity1
Line-inYes
Network
Ethernet LANYes
Wi-FiNo
LAN controllerRealtek RTL8111H
Ethernet interface typeGigabit Ethernet
Features
Power source typeATX
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Supported processor socketsSocket AM4
PC health monitoringFan, Temperature, Voltage
Cooling typePassive
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Audio chipRealtek ALC897
Product colourBrown
Expansion slots
Number of M.2 (M) slots2
PCI Express x1 (Gen 3.x) slots1
PCI Express x16 (Gen 4.x) slots1
1st M.2 largest key size2280
1st M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation3.0
BIOS
Battery technologyLithium-Manganese Dioxide (LiMnO2)
BIOS typeUEFI AMI
Clear CMOS jumperYes
BIOS memory size128 Mbit
ACPI version5.0
System Management BIOS (SMBIOS) version2.7
Desktop Management Interface (DMI) version2.7
Power
Power source typeATX
Video
Maximum resolution5120 x 2880 pixels
HDCPYes
DirectX version12.0
Packaging data
Package width265 mm
Package depth265 mm
Package height54 mm
Package weight837 g
Software
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Bundled softwareNorton® Internet Security (OEM version) LAN bandwidth management software
Battery
Battery technologyLithium-Manganese Dioxide (LiMnO2)
Battery weight3 g
Number of battery cells1
Lithium weight per battery0.07 g
Battery typeCR2032
Logistics data
Products per shipping (inner) case1 pc(s)
Country of originChina
Weight & dimensions
Height35 mm
Package width265 mm
Package depth265 mm
Package height54 mm
Package weight837 g
Width244 mm
Depth244 mm
Packaging content
Bundled softwareNorton® Internet Security (OEM version) LAN bandwidth management software
Batteries includedYes
Screws includedYes
Other features
Height35 mm
Package width265 mm
Package depth265 mm
Package height54 mm
Package weight837 g
Identifiers
Additional EANs0889523036006

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