The OTG cable comes with two ends as standard cables and the difference is that one side fits a device within itself whereas the other side fits in a device. This makes a connection between the two devices, out of which most probably the device being plugged into the cable is a memory device whereas the device in which the cable is plugged in is a smartphone or tablet. The mobile devices does not have a full size USB port which starts the need of an OTG cable. The devices which support OTG does not require any custom installation and display the drive in a new folder within the phone or tablet’s file manager.