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GIGABYTE

GIGABYTE B550M K AMD AM4 Micro-ATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 3+3 Power Phase, 2X M.2, PCIe 4.0, USB 3.2 Gen 1, GbE LAN, Q-Flash

  • Based on 921 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jul 11
Order within 11 hours and 34 minutes
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Style: B550M|K|M.2 x2|Non-WIFI


Size: mATX


Features

  • AMD Socket AM4: Ready to support AMD Ryzen 5000/4000/3000 Series Processors
  • Enhanced Power Solution: Digital 3+3 VRM Design and premium chokes and capacitors for steady power delivery.
  • Advanced Thermal Armor: Chipset heatsinks for better heat dissipation.
  • Boost Your Memory: Compatible with DDR4 and supports 4 DIMMS with Extreme Memory Profile support.
  • Comprehensive Connectivity: 1x Ultra Durable PCIe 4.0 x16 slot, 1x PCIe 4.0 M.2 slot, 1x PCIe 3.0 M.2 slot, 4x USB 3.2 Gen 1 ports for hassle-free setup.

Description

The GIGABYTE B550M K supports AM4 Ryzen 5000 Processors and features unparalleled performance. GIGABYTE B550 motherboards come with upgraded power design, high grade storage standards, and outstanding connectivity that enables you to optimize your performance.

Brand: GIGABYTE


CPU Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 3000 Series, AMD Ryzen 4000 Series, AMD Ryzen 5000 Series


Chipset Type: AMD B550


Memory Clock Speed: 3200 MHz


Platform: Windows 11


Model Name: B550M K


CPU Model: Ryzen 5


Processor Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 3000 Series, AMD Ryzen 4000 Series, AMD Ryzen 5000 Series


Chipset Type: AMD B550


Memory Clock Speed: 3200 MHz


Platform: Windows 11


CPU Model: Ryzen 5


Memory Storage Capacity: 128 GB


Ram Memory Maximum Size: 128 GB


Main Power Connector Type: ATX


Graphics Card Interface: PCI Express 4.0


Memory Slots Available: 4


Number of Ports: 6


S/PDIF Connector Type: Optical


System Bus Standard Supported: SATA 3


Total SATA Ports: 4


USB 2.0: 4


Total Usb Ports: 4


Number of Ethernet Ports: 1


Total Number of HDMI Ports: 1


Total PCIe Ports: 2


Chipset Family: AMD B550


Brand: GIGABYTE


Model Name: B550M K


Model Number: B550M K


Manufacturer: GIGABYTE


UPC: 889523036006


Mfr Part Number: B550M K


Unit Count: 1.0 Count


Item Weight: 760 Grams


Warranty Description: 3 Years Manufacturer


Item Dimensions L x W x H: 10.43"L x 2.12"W x 10.43"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Excellent motherboard — my PC is now super fast! 🚀
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
⭐⭐⭐⭐⭐ I recently installed the GIGABYTE B550M K, and the difference was immediate. I used to have my Ryzen 5 on an A320HM motherboard, and even though it worked, it didn’t let the CPU reach its full potential. After switching to this one, my PC runs much faster and more stable. What I like the most is that it’s the right board for AM4 processors, with great build quality and a very reasonable price. It allowed me to complete the mid-range PC I wanted without spending too much, and everything worked perfectly from the first boot. It also has two M.2 slots, which is great if you want a fast SSD. Plus, the Micro-ATX format fits nicely in my small case while leaving room for everything I need. In short, this was an excellent purchase — it does exactly what it promises and gave my computer a whole new life. 💯 Definitely a 5-star product! ... show more
Reviewed in the United States on October 22, 2025 by Omar Bido Mesa
    • Not a bad motherboard for the price.
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
It's a great board it came in perfect running condition and I have had no issues with it so far. It was pretty easy to install as wall i didn't have to take the pc apart much as I ordered it as a replacement. A good well-rounded motherboard.
Reviewed in the United States on April 10, 2026 by Dave10606
    • Great motherboard Great motherboard
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
Review Image by Robert perkins
Can’t beat $100 only thing I don’t like about it is how there’s no heatsink for the m.2 other than that great board for the price
Reviewed in the United States on June 1, 2026 Reviewed in the United States on June 1, 2026 by Robert perkins
    • Worth buying!
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
No problems, I've been using it for about a year now. Had a little scare updating the BIOS.
Reviewed in the United States on June 4, 2026 by zee
    • Decent mobo
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
It’s a pretty good mobo, but the only problem is the way they have you secure the m.2 ssds. Which snapped and broke
Reviewed in the United States on March 5, 2026 by Brayden
    • Good quality, low price, been running well for a year (local AI rig).
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
Good board for the price when I got it. Running a single powerful gpu with high ram for a local AI rig and it handles heat well. Heavy duty feel to it. Wish it had two pcie slots, but you get what you pay for and this one is cheap. Good for the cost.
Reviewed in the United States on April 11, 2026 by Jon
    • Your basic B550 motherboard for a decent price
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
If you’re looking for a basic B550 motherboard at a decent price this one checks all the basic requirements
Reviewed in the United States on June 2, 2026 by S. Robinson
    • Great
Style: B550M|K|M.2 x2|Non-WIFI Size: mATX
A very good motherboard for an old processor I had at hand
Reviewed in the United States on June 13, 2026 by cphsic

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