A cable connector includes a flat cable having a plurality of first electric conductive sections formed on a first end and a plurality of second electric conductive sections formed on a second end thereof. A circuit board is electrically connected to the first end of the flat cable. The circuit board has a plurality of first conductive sections and a plurality of second conductive sections respectively formed thereon. The plurality of first conductive sections is electrically connected to the plurality of first electric conductive sections of the flat cable. The plurality of first conductive sections and the plurality of second conductive sections are electrically connected to each other via a displacement circuit disposed in the circuit board.