Features Finger-print functions: the users could press one to ten finger prints and establish data base in the USB, and USB is only re-readable according to the finger printers of the users. Suitable for privacy applications. 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: 128MB-1GB Operating system: Windows98/NT/ME/2000/XP or higher (driverless above Win98)