Printed circuit board for connection with an external connector

A multi-layered printed circuit board (PCB) for connection with an external connector. The external connector has a signal pin and an outer conductor. The printed circuit board includes a first conductive reference plane, a signal trace, a second conductive reference plane, a characteristic impedance member, and a third conductive reference plane. The characteristic impedance member is provided for connecting the signal trace and the signal pin. The third conductive reference plane is provided for electrical connection with the outer conductor. There are vertical separations inserted between the first conductive reference plane, the second conductive reference plane, and the third conductive reference within the printed circuit.