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The ASUS Prime B550-PLUS AC-HES motherboard is engineered for 3rd Gen AMD Ryzen processors, delivering PCIe 4.0 speeds, dual M.2 slots, WiFi 5, and 1Gb Ethernet connectivity. It features robust power delivery with 8+1 DrMOS stages, comprehensive cooling solutions including VRM and PCH heatsinks plus hybrid fan headers, and advanced 5X Protection III for hardware reliability. With support for up to 128GB DDR4 memory at 4866 MHz and Aura Sync RGB customization, it’s the ideal foundation for professionals and DIY enthusiasts seeking a high-performance, future-ready PC build.


















| Asin | B0CZQCTCPX |
| Best Sellers Rank | #38 in Computer Motherboards |
| Brand | ASUS |
| Chipset Family | AMD |
| Chipset Type | AM4 |
| Compatible Devices | Personal Computer |
| Compatible Processors | AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors |
| Cpu Model | Ryzen 3 |
| Customer Reviews | 4.5 4.5 out of 5 stars (361) 4.5 out of 5 stars |
| Graphics Card Interface | PCI Express |
| Item Dimensions L X W X H | 13.5"L x 2.9"W x 10.7"H |
| Item Weight | 0.9 kg |
| Main Power Connector Type | 24-Pin |
| Manufacturer | ASUS |
| Memory Clock Speed | 4866 MHz |
| Memory Slots Available | 4 |
| Memory Storage Capacity | 128 GB |
| Mfr Part Number | PRIME B550-PLUS AC-HES |
| Model Name | PRIME B550-PLUS AC-HES |
| Model Number | PRIME B550-PLUS AC-HES |
| Number Of Ethernet Ports | 1 |
| Number Of Items | 1 |
| Number Of Ports | 7 |
| Platform | Windows |
| Processor Socket | Socket TR4 |
| Ram Memory Maximum Size | 128 GB |
| Ram Memory Technology | DDR4 |
| S Pdif Connector Type | Optical |
| System Bus Standard Supported | SATA 3 |
| Total Number Of Hdmi Ports | 1 |
| Total Pcie Ports | 7 |
| Total Sata Ports | 6 |
| Total Usb Ports | 6 |
| Upc | 195553397162 |
| Usb 2 0 | 4 |
| Warranty Description | 3 Years |
User
Great price, wicked fast delivery
My NAS’ motherboard decided to give up the ghost. (Gigabyte FX990 AM3+, FX 8120, 32GB Kingston DDR3 1600 ECC)So, when a saw this $99 board with a $30 discount, I jumped on it.The board arrived in pristine condition, in its sealed OEM box. The best part was that I ordered it late Thursday night, and it arrived early Friday morning.I already had an R5-3600 and some DDR4-2666, so I just transferred the nvme boot drive, LSI HBA (and 8 hdd jbod array, 2ssd write cache) and the Intel x550 nic, and was back up and running in less than 30 minutes. That includes the time it took to update the BIOS.No problems whatsoever
User
Easy install and tons of bells and whistles
Plenty of PCI-E ports, all appear to be x16. Works with argb lights and was easy to install in my case. Parts were equally easy to install with plenty of space for everything. The m.2 works, the sata works, the extra usb stuff works. Its a good board
User
Good for the price
Cheap and good motherboard
User
Great value for a Ryzem MB
Great for a budget build, paired it with a Ryzen 5 5600GT, 16 GB Corsair Vengence DDR 4 3200, Crucial P3 Plus 1TB PCIe 4.0 3D NAND NVMe M.2 SSD, Corsair 650 W power supply, and an old case I had sitting around that had a DVD burner in it, total cost under very low. Not as fast as my Ryzen 7 7700X machine but plenty fast for everyone except an avid gamer.First thing I ran into was the back plate that covers the USB and other ports was wrong, so couldn't use the USB flash port (already had the board installed when I noticed this, didn't feel like taking it out again so had to update the bios using Windows 10, Windows 11 didn't recognize the CPU, their flash utility didn't work so loaded Windows 10 first, used it to update the BIOS in Windows, then upgraded to Windows 11. Maybe not the best way to do it but it worked for me (having a Microsoft account was able to install Windows 10 then upgrading to Windows 11 with no problem.)With the stock wraith cooler temp sits at 40 degrees Celsius, well within specs.I've built several computers using AMD processors and Asus motherboards, never had a problem with either one. After you update the BIOS use the Armoury Crate software from AMD to update all the drivers including the wireless drivers and all will go smooth.Really the only con is needing to update the BIOS but don't really consider it a con.
User
Great Mobo, though it took 2 to get a working one
I chose this board for specific features, namely the 6 SATA ports. The first mobo would not work. It powered up, but there was no video ( using a discrete video card). After extensive troubleshooting, I had the board replaced by Amazon (thankfully an easy process). The second board has worked well. There are plenty of slots, and components are not cramped together. A good board for a budget build.
User
Durable product
This motherboard became a staple for my business that i was running 20 PCs. They are work horses that require little to no maintenance and so far a couple years and they are still running.
User
Cannot access BIOS if any form of storage attached.
(Really Zero stars, but 1 was the lowest allowed.)Cannot access BIOS if any form of storage attached (SSD, M2 or USB). The ASUS logo flashes briefly, but always ends up on a black screen. Wanted to try upgrade/downgrade BIOS to see if it's limited to this BIOS version, but attaching a USB with a different BIOS version just ends up resulting in a black screen. Able to access BIOS if no storage attached, but didn't find a setting that would account for this problem. Able to run OS when I installed a M2 that already had linux on it. Perhaps could be functional if you don't need to manage drives or boot order - not the case for me. Clearly a BIOS problem. Wasted too many hours trying to trouble shoot. (Not a novice - over 20 years experience building/troubleshooting PCs.).
User
Excellent catch when it’s on sale
Got on a huge sale for $65, works great and have no complaints for a brand new b550 ATX mobo for that price.
User
I'm switching to Asus for future builds
I was an MSI guy forever. They make great boards.....used to!!!!The last 4 MSI boards I got were ALL catastrophic epic failures.All debug lites red, ports not working etc....JUST GARBAGE.So I thought well....Asus doesn't have a very good rep lately either but what the hell and give it a shot.This is my first Asus build and it hit it out the park.So easy to navigate the bios, everything worked like a champ.I had to get the wifi driver off the website to initiate the setup but after it downloaded all the proper drivers using that Aura software it setup just fine.This isn't a high end board by any means but It's great for a beginner build and cheap.
User
Worth the price.
Not bad for the price, specially when i Try to find an ATX B550 board nowadays. Does the job i want from it perfectly.
User
Make sure your motherboard has More pins fans
the fans pin only like? 4 and i wish it had more
User
Tarjeta madre a buen precio y calidad
Excelente producto, me gustó mucho, funciona sin problemas y lo que me encantó es que tiene varias ranuras PCI-e 16X, es grande la tarjeta, para que quien piense en comprarla, considere que debe tener un gabinete atx.
User
Update to date BIOS!
Worked out of the box with my new Ryzen 5500, RTX 5050, and SSD with Windows 11 installed. Even had an option in the BIOS for Resizable Bar. Manufacturing date on the box said April 2025.Everything is working well! Couldn't boot at first but my RAM just wasn't fully seated. Also was having problems connecting to bluetooth headphones until I realized that the included WiFi adapter is also the bluetooth adapter and must be installed.Also be aware that if you are installing the basic stock AMD cooler, you will need to hold the backplate in place as it most likely will fall off the back after unscrewing the pre-installed stands for higher-end coolers. And as far as I can tell, there are no debug leds on this motherboard. But I maybe I just missed them.
Trustpilot
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