Review on 💾 High-Speed Micro SD Memory Card 512GB Class 10 with Adapter - Camera, Smartphone, Computer, Dash Cam, Tachograph, Tablet, Drone by Ronald Ingram

Supposed to be a high speed U3 card. But I could never get more than 6MB. I usually get much faster speeds with a card reader. Even with adding a few GB of random files, the read speeds were also very slow. And even with secure erase, errors occurred after about 5 times. After 3 days of trial and error, I had to reformat it twice due to unrecoverable errors. At first I thought maybe it's the exfat file system that is known for its bugs, but the same thing happened with ntfs and fat32.