1,USB 1.0/1.1/2.0complaint,hot plug and play. 2.no external power is required,powered by USB bus directly. 3.high capacities. 4.highly compatibility between different operation systems. 5.electronic storage device,no mechanical component,shake protection,electromagnic wave protect. 6.write/delete protection switch. 7.more than 10 years data retention. 8.high transfer rate(30 times floppy drive) 9.easily portable.