As you use the rocket shaped uc330 its cap fits on either side of its dual headed usb when not in use stand it up on its end for easy storage on your desktop like a rocket awaiting lift off dual head storage keeps you connected the uc330s on the go micro usb interface connects directly to mobile devices running android 4 1 or higher all without the need for a cable or an adaptor its standard usb head connects to any desktop or laptop computers usb port faster more convenient than wir