Review on 🚀 A-Tech 64GB (4x16GB) DDR4 2666MHz RAM Upgrade Kit for Apple iMac 2019 & 2020 27 inch Retina 5K: Enhanced Memory Performance! by Donald Manipole

Ram works great now! Although I tried a little. I had to call the company for the procedure to resolve the issue of dual slot recognition. It wasn't Atech's fault and they helped me get through it. One of the four cards had to be replaced, but was quickly fixed. In summary, this works great and has been a great deal. Just call the company and ask them to go through with it and you'll be fine.