Review on OWC 32GB (2 x 16GB) PC21300 DDR4 2666MHz SO-DIMMs Memory: Enhance Your Device's Performance by Brent Doolan

I removed the two standard 4GB RAM sticks in my new 2019 iMac 3.0GHz i5 and through two 16GB sticks each replaced by OWC, follow online instructions (it's not difficult but you need to know what you're doing) The computer wouldn't start I've tried different methods (e.g. different slots ). Nothing changed. I called Apple, they offered to reset Apple and try new RAM again the next day to let the computer get used to its original memory (okay). Day I tried again, OWC RAM to install. Again it didn't work. No doubt it's in right. Also, Apple told me it *should* work (it's marked 2666 DDR4). However, it doesn't work. I'm posting this review to try n to relieve you of your stress for about an hour.