A connector comprising: a terminal group including at least one or more terminal pairs of two terminals; and an insulator holding the terminal group , wherein each terminal of the terminal pair included in the terminal group includes at a tip end side portion of the connector , a contact portion to be connected in contact with a terminal of a partner connector , and at a back end side portion of the connector , a terminal mounting portion to be mounted on a substrate, the contact portions are arranged adjacent to each other in a direction perpendicular to the substrate, and the terminal mounting portions are arranged adjacent to each other in a direction horizontal to the substrate, characterized in that the connector comprises an outer conductor shell housing the insulator , each terminal of the terminal pair includes, in an order from the contact portion to the terminal mounting portion , at least a first bent portion at which the terminal pair extending in a connector fitting direction is bent in a direction of the substrate, a second bent portion at which the terminal pair bent toward the substrate is bent in parallel with the substrate, and a third bent portion on a mounting portion side with respect to the second bent portion , wherein at the third bent portion , each terminal of the terminal pair extending outward of the connector in a direction perpendicular to the connector fitting direction after the first bent portion and the second bent portion is bent backward along the connector fitting direction. a terminal group including at least one or more terminal pairs of two terminals; and an insulator holding the terminal group , wherein each terminal of the terminal pair included in the terminal group includes at a tip end side portion of the connector , a contact portion to be connected in contact with a terminal of a partner connector , and at a back end side portion of the connector , a terminal mounting portion to be mounted on a substrate, at a tip end side portion of the connector , a contact portion to be connected in contact with a terminal of a partner connector , and at a back end side portion of the connector , a terminal mounting portion to be mounted on a substrate, the contact portions are arranged adjacent to each other in a direction perpendicular to the substrate, and the terminal mounting portions are arranged adjacent to each other in a direction horizontal to the substrate, characterized in that the connector comprises an outer conductor shell housing the insulator , each terminal of the terminal pair includes, in an order from the contact portion to the terminal mounting portion , at least a first bent portion at which the terminal pair extending in a connector fitting direction is bent in a direction of the substrate, a second bent portion at which the terminal pair bent toward the substrate is bent in parallel with the substrate, and a third bent portion on a mounting portion side with respect to the second bent portion , wherein at the third bent portion , each terminal of the terminal pair extending outward of the connector in a direction perpendicular to the connector fitting direction after the first bent portion and the second bent portion is bent backward along the connector fitting direction. <EOS>