A printed circuit board on which a connector is mounted includes a conductive layer, insulating layers, and a supporting member. A part of the conductive layer is exposed on a top surface of the PCB in order to form a connecting pad portion for connecting the connector. The insulating layers are disposed proximate to both sides of the conductive layer. The supporting member is connected to the conductive layer and covers a surface of a hole formed by opening an orifice through the conductive layer and the insulating layer. The hole is disposed adjacent to the connecting pad portion.