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GIGABYTE

GIGABYTE B550 UD AC (rev. 1.2) Motherboard, Supports AMD AM4 Ryzen 5000 Processors, ATX, DDR4, Dual M.2, SATA 6Gb/s, Intel 802.11a/b/g/n/ac, Realtek GbE LAN, PCIe 4.0

  • Based on 2,224 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Nov 7
Order within 10 hours and 49 minutes
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Style: B550|D|M.2 x2|WIFI5


Size: ATX


Features

  • AMD AM4 Socket: Supports AMD Ryzen 5000 Series/ Ryzen 5000 G-Series/ Ryzen 4000 G-Series and Ryzen 3000 Series Processors
  • DDR4 Compatible: Dual Channel ECC/ Non-ECC Unbuffered DDR4, 4 DIMMs
  • Sturdy Power Design: 10 plus3 Phases Digital Twin Power Design with Low RDS(on) MOSFETs
  • Connectivity: PCIe 4.0 x16 Slot, Dual Ultra-Fast NVMe PCIe 4.0/3.0 x4 M.2 Connectors, Realtek GbE LAN chip
  • Fine Tuning Features: RGB FUSION 2.0, Supports Addressable LED and RGB LED Strips, Smart Fan 5, Q-Flash Plus Update BIOS without installing, CPU, Memory, and GPU

Description

AMD AM4 Socket: Supports AMD Ryzen 5000 Series/ Ryzen 5000 G-Series/ Ryzen 4000 G-Series and Ryzen 3000 Series Processors DDR4 Compatible: Dual Channel ECC/ Non-ECC Unbuffered DDR4, 4 DIMMs Sturdy Power Design: 10+3 Phases Digital Twin Power Design with Low RDS(on) MOSFETs Connectivity: PCIe 4.0 x16 Slot, Dual Ultra-Fast NVMe PCIe 4.0/3.0 x4 M.2 Connectors, Realtek GbE LAN chip Fine Tuning Features: RGB FUSION 2.0, Supports Addressable LED & RGB LED Strips, Smart Fan 5, Q-Flash Plus Update BIOS without installing, CPU, Memory, and GPU. GIGABYTE B550 UD AC motherboards maximize your PC's potential with AMD StoreMI technology. StoreMI accelerates traditional storage devices to reduce boot times and enhance the overall user experience. This easy-to-use utility combines the speed of SSDs with the high capacity of HDDs into a single drive, enhances the read/write speeds of the device to match that of SSDs, bolsters data performance for great value, and transforms the everyday PC to a performance driven system.

Brand: GIGABYTE


CPU Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD 3rd Generation Ryzen


Chipset Type: AMD B550


Platform: Windows


Model Name: B550 UD AC


Memory Storage Capacity: 128 GB


RAM Memory Maximum Size: 128 GB


RAM: ‎DDR4


Wireless Type: ‎802.11a/b/g/n/ac


Number of USB 2.0 Ports: ‎4


Brand: ‎GIGABYTE


Series: ‎B550 UD AC


Item model number: ‎B550 UD AC


Item Weight: ‎2.71 pounds


Product Dimensions: ‎13.18 x 10.62 x 3.14 inches


Item Dimensions LxWxH: ‎13.18 x 10.62 x 3.14 inches


Manufacturer: ‎GIGABYTE


Date First Available: ‎February 1, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 7

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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Similar Products

Top Amazon Reviews

    • stable at reasonable oc
Model name: B550
I bought one of these and sent it back, the reset switch did not work. The ps2 port doesn't work on this board, but I can live with that. Hope it doesn't mean something else will fail later. Put a 5700x in it and running 16 threads at 4.4 gigs with temps between 60 and 65f. I run distributed computing and all threads run at 100% for hours and hours. Installation has the usual problems but there was nothing major. This one is a 1.4 revision. This board has screws for m2 mounting and not the plastic securing devices. The bios is relatively easy to navigate and has many overclocking settings. Buying, shipping was through Amazon and painless. The return of the first was easy as well. Check the specs for the rest. Easy buy, easy install and running like a charm, what can I say. Minus one star for the ps2 port. ... show more
Reviewed in the United States on September 13, 2023 by Dondee
    • 4/5 Stars for the motherboard but…
Model name: B550
The motherboard is 4/5 stars and is a good entry level board. Watch some reviews, the board can run hotter than other boards. BUT… Amazon sold me an open box as a new product. It was missing the manual and drivers CD. The protective motherboard sleeve had been removed and put back on. Be careful when you buy electronics from Amazon. I returned the motherboard for this reason. ... show more
Reviewed in the United States on August 19, 2023 by Mike
    • One of the Worst Out the Box Experiences with a Motherboard
Model name: B550 UD AC
TLDR - you need to disable CSM and make sure fTPM is enabled to install windows 11 If you have issue with mouse/keybaord glitching - disable processor C-state in bios - bios update did not fix the usb problem. So I had to get a good motherboard for cheap. Basically an emergency situation. Prime was best option. This ain't it. If it wasn't for the fact I needed my computer working i would have boxed this up and got another brand. Because I got it working, I'll accept my savings and keep this thing. But i cannot recommend this motherboard for a beginner building a pc for the first time. I wouldn't recommend it for anyone honestly. (about me) - I'm an IT professional and I have been working on various states of consumer and some enterprise hardware for the better half of 15 years. This is my first motherboard that gave me loads of teething issues right out the box. Granted windows 11 is a pain to install from the get go but this was the first piece of modern hardware that just made it more annoying than it should be. And here is where things get fun. Even advanced mode, some of the functions are nested in a way that make things more tedious than it should be. Enabling secure boot was one of those. Windows 11 would not install because CSM was enabled.... and then when you disable it, you then see secure boot options. It's clear once you know what the error you are getting exactly..after some research... It was wasn't clear the way things were laid out. That took 1 hour to figure out why i couldn't install win11 by...installing windows 10 and running the readiness check to see what i was missing. Maybe its a flaw on windows for not telling the user why windows 11 installer failed during the initial process booting from the install media......(just a general we can't install on your system message) -- Just when I got clear of all that, i was getting crazy usb keyboard and mouse stutters. a WIRED keyboard required 1-2 key presses to register an input...and WIRED mouse had the same issue where you would moving the cursor and it stuttered. You have to go BACK into the bios and disable C-states and then usb 2.0 ports work normal again... this i have never seen in ANY motherboard I have opened or installed where a power state affects the USB pors causing issues.... during troubleshooting prior to this i rolled up to the latest version of the bios and that certainly didn't change this. I don't plan to overclock or do any crazy heavy gaming, but if i wasn't just determined to figure this out, this would have been a return. So please for the sake of sanity, don't buy this thing. Please spend your money on something else. I got it to work for me but with a level of difficulty I would not expect the average user to work through. Period. ... show more
Reviewed in the United States on September 4, 2023 by Unihiron
    • Functional motherboard.
Model name: B550 UD AC
My motherboard kinda killed itself unexpectedly and I bought this as a replacement. I cannot tell a difference performance-wise. I use it for some higher end gaming with an RTX 3070 so you know this motherboard works.
Reviewed in the United States on August 16, 2023 by Royce Ledgerwood
    • Great MOBO
Model name: B550
Great motherboard, stable fast.
Reviewed in the United States on August 31, 2023 by Jose Diaz
    • Very nice upgrade from the A320 motherboard that I had prior
Model name: B550
Pros: ATX Motherboard Had plenty of fan headers including 3 pin and 4 pin ARGB headers Really nice chunky VRM heat sinks Built in I/O shield Overall just a great board Cons: I gave it 4 stars because while it did come in the original box, upon receiving the item, there wasn't any additional packaging which you would think since it's a motherboard being shipped and the possibility of damage during shipping, wasn't a very bright idea. Would have been nice to have a little more extra security like an additional box and bubble wrap in the box covering the motherboard in its original packaging. The Gigabyte software is not too bad, but not the best I've seen either. Overall: Really great motherboard for the price. The description said in acceptable condition which meant there would be cosmetic damage of 1" or more. I have to say, there was no cosmetic damage on this board at all. I paired it with the Ryzen 5 5500, MSI RX 6500 XT, PNY 3200 mhz 16 gb ram, 2 SSD drives, and 2 HDD drives. It works beautifully, and is also nice to have the Smart Fan 5 so that you can get warnings while playing if your CPU goes over a certain degree of your choice. Can't quite get Secure Boot to work, and would really hate to have to wipe my SSD that has Windows on it in order to turn on Secure Boot. With CSM Support enabled, I always have to use the F12 to get into Boot setup in order to get into Windows. Otherwise it will go to a black screen and tell me to insert a bootable drive. But spamming the F12 button doesn't bother me. The upgrade from MATX to ATX is nice, along with the ARGB headers. Very satisfied with this product and would recommend to anybody! ... show more
Reviewed in the United States on September 10, 2022 by Natasha S.
    • Very stable
Model name: B550
This board has been running about a year and rock solid and stable. I don't overclock so can't comment on that.
Reviewed in the United States on July 29, 2023 by Ann
    • Very tough motherboard
Model name: B550
Review Image by trintendo trintendo
The media could not be loaded. I like that it’s a tank lol. I had to take it out of the case multiple time to mod the case for extra fans. It boots like a charm every time.
Reviewed in the United States on August 21, 2023 by trintendo trintendo

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