A method is described for capturing USB data traffic for a monitored device by a USB analyzer using a single USB host controller. A switch array is connected to the photodiode array. The first software component of the present invention is used to generate a photomask order in a specified format. The means of converting kinetic energy into electric energy is, for example, a mechanical gear based assembly or a piezoelectric crystal based assembly. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer’s outer surface hardness and inner surface hardness is 5 Shore C units or greater.