Key Features Designed for super-fast SD UHS-II card transfers Compact, portable SD card reader, no cables required Compatible with USB 3. 0 and backward-compatible to USB 2. 0 Compatible with UHS-II, backwardscompatible with UHS-I and non-UHS SD cards The San Disk Extreme PRO SD UHS-II Card Reader/Writer is designed to increase workflow efficiency for professional photographers and videographers. Small enough for fieldwork, the compact reader is built to handle the high-performance demands of UHS-II card technology and offers support for fast transfer speeds. With a USB 3. 0 interface (and backwards-compatible with USB 2. 0), the San Disk Extreme PRO SD UHS-II reader/writer is your best choice for performance and efficiency when paired with a SD UHS-II memory card.