Speed smart, we could only extract a max video browse speed of 223MB/s and 198MB/s generate price from our UHS-II SD card - not dreadful, but a way shot of Several other readers we've analyzed. Image transfer functionality is even worse continue to, with 152MB/s browse and 98MB/s write speeds https://supertop-shop.com/usb-3-0-sd-and-micro-smart-card-reader/