The sandisk extreme pro sdhcsdxc uhs ii card readerwriter is designed to increase workflow efficiency for photo and video enthusiasts as well as professional photographers and videographers small enough for fieldwork the compact reader is built to handle the high performance demands of uhs ii card technology this readerwriter features a usb 30 interface which is capable of transferring card content up to 10 times faster than a usb 20 interface the sandisk extreme pro sd uhs ii readerw