A connection structure for connecting a photoelectric flexible wiring board to a mounting board of an information processing terminal apparatus, the connection structure comprising: a connector (40, 50); and a photoelectric flexible wiring board capable of transmitting optical and electrical signals; wherein the connector (40, 50) is adapted to be mounted, in use, to a mounting board (12, 22) of an information processing terminal apparatus, the connector comprising: a resin body (41, 51), the resin body having a guide hole (42, 52) of U-shape in cross section, the guide hole being adapted to receive an end portion of the photoelectric flexible wiring board; a plurality of contacts (43, 53) arranged laterally on a ceiling of the guide hole of the resin body, and a photonic device (45, 55) provided on the ceiling of the guide hole of the resin body; and wherein the photoelectric flexible wiring board comprises: a plurality of electrical transmission lines, arranged laterally on a surface of the photoelectric flexible wiring board so as to be contactable with the respective contacts (43, 53), the electrical transmission lines having a length substantially equal to an entire length of the photoelectric flexible wiring board; an optical transmission line, provided within the photoelectric flexible wiring board and having a length substantially equal to the entire length of the photoelectric flexible wiring board, an optical signal inlet/outlet, provided in a surface of the end portion of the photoelectric flexible wiring board so as to face the photonic device (45, 55), and a waveguide mirror, disposed in an end portion of the optical transmission line so as to face the optical signal inlet/outlet, for bending the optical waveguide at a right angle. a connector (40, 50); and a photoelectric flexible wiring board capable of transmitting optical and electrical signals; wherein the connector (40, 50) is adapted to be mounted, in use, to a mounting board (12, 22) of an information processing terminal apparatus, the connector comprising: a resin body (41, 51), the resin body having a guide hole (42, 52) of U-shape in cross section, the guide hole being adapted to receive an end portion of the photoelectric flexible wiring board; a plurality of contacts (43, 53) arranged laterally on a ceiling of the guide hole of the resin body, and a photonic device (45, 55) provided on the ceiling of the guide hole a resin body (41, 51), the resin body having a guide hole (42, 52) of U-shape in cross section, the guide hole being adapted to receive an end portion of the photoelectric flexible wiring board; a plurality of contacts (43, 53) arranged laterally on a ceiling of the guide hole of the resin body, and a photonic device (45, 55) provided on the ceiling of the guide hole of the resin body; and wherein the photoelectric flexible wiring board comprises: a plurality of electrical transmission lines, arranged laterally on a surface of the photoelectric flexible wiring board so as to be contactable with the respective contacts (43, 53), the electrical transmission lines having a length substantially equal to an entire length of the photoelectric flexible wiring board; an optical transmission line, provided within the photoelectric flexible wiring board and having a length substantially equal to the entire length of the photoelectric flexible wiring board, an optical signal inlet/outlet, provided in a surface of the end portion of the photoelectric flexible wiring board so as to face the photonic device (45, 55), and a waveguide mirror, disposed in an end portion of the optical transmission line so as to face the optical signal inlet/outlet, for bending the optical waveguide at a right angle. a plurality of electrical transmission lines, arranged laterally on a surface of the photoelectric flexible wiring board so as to be contactable with the respective contacts (43, 53), the electrical transmission lines having a length substantially equal to an entire length of the photoelectric flexible wiring board; an optical transmission line, provided within the photoelectric flexible wiring board and having a length substantially equal to the entire length of the photoelectric flexible wiring board, an optical signal inlet/outlet, provided in a surface of the end portion of the photoelectric flexible wiring board so as to face the photonic device (45, 55), and a waveguide mirror, disposed in an end portion of the optical transmission line so as to face the optical signal inlet/outlet, for bending the optical waveguide at a right angle.