Finger-print functions: the users could press ten finger prints and establish data base in the USB, and USB is only re-readable according to the finger prints of the users. Suitable for privacy applications. Third Generation of related products series. Either used by one person or up to ten persons. USB1.0, reading speed 900KB/S, storing speed 700KB USB2.0: reading speed 7MB/S，storing speed 4MB/S Capacity:32MB,64MB,128MB,512MB,1G choices. Operating system: Windows98/NT/ME/2000/XP or higher (driverless above Win98) Accessories: Installation CD, User Manual.