RDF5 start card reader using SuperSpeed USB 3.0 interface, release transmission speed. Support a new generation of Ultra High Speed SDHC/SDXC, microSDHC/SDXC flash memory CARDS, can through any a desktop or laptop computer USB interface, easily transfer any files. Support USB 3.0 transmission interface, downward compatible USB 2.0. Support a new generation of UHS -i specifications flash memory CARDS, contains SDHC (UHS - I), SDXC (UHS - I), microSDHC (UHS - I), microSDXC (UHS - I). Convenient LED lights. More efficient transmission of high-quality video files. USB power supply directly, not need any power supply system. System requirements: with a USB interface can be normal use desktop or laptop (see performance need to use the start interface), and has one of the following operating systems: -Windows XP -Windows Vista -Windows 7 -Windows 8 -MAC OS 10.2.8, or update - Linux Kernel process or update (support usb)