Review on 📱 Versatile SD Card Reader for iPhone/iPad with Trail Camera SD Viewer Adapter - USB Memory Micro SD Card Reader for iPhone Mac PC Desktop - Plug and Play, No App Required! by Mike Groover

Bought a new Samsung EVO 512GB MicroSD for my GoPro. With this reader I get read speeds of 19MB/s on my Digital Storm Video workstation (ie the fastest desktop technology). With two other brand readers that I bought at the same time, I get 90+ MB/s. Too slow. I bought two of these, one on March 30, 2021 and the other on April 8, 2021. Both are slower than before in the evaluation. I immediately switched the MicroSD card to a uni SD card reader and then to an old Saicoo USB3.0 4 that I bought on 07/21/2018. Both read/transfer data at a speed of 90MB/s. Tested on another fast desktop in my office with the same results. CONS: Transfer speed listed does NOT apply to MicroSD read/transfer speeds on Windows systems.