This is the high specification of the speeding up of data transfer compared with the conventional USB1.1. The adoption of USB2.0 made it possible to speed up the data transfer remarkably. It is necessary that the PC interface for connecting supports USB2.0 to get the data transfer speed of USB2.0 . (It is possible to use the DiMAGE Scan Dual III with USB1.1, however it is impossible to get the same data transfer speed as USB2.0.