I am repairing a VBOX Sport mobile data tracker with GPS and bluetooth. The USB charging port was ripped off the circuit board and a component was knocked off at the same time. I suspect a bi-directional TVS diode is the component but am not sure. Inspection of a second unit with a ripped off port but intact component reveals a surface mount micro-component that is black and has two bands on it in light gold. One at either end of the component. The component is similar to a resistor, a capacitor, or a smaller inductor in size and appearance. I am hoping for a circuit diagram for the unit to ID and confirm the component specs. Thanks.