A connector comprising: an insulator that includes a first main surface being a surface that is configured to face a cable, and a rear surface being a surface on an opposite side of the first main surface; a contact that is configured to electrically connect the cable and a substrate; and an actuator that is rotatable about a rotation axis parallel to the substrate between a first state in which the actuator is closed and a second state in which the actuator is open, wherein the actuator includes a plate-shaped side wall that intersects with the rotation axis, the side wall includes: a base portion including a second main surface being a surface that faces the first main surface when the actuator is rotated in a direction closer to the cable; and a recognition portion that protrudes from the base portion, when the cable is arranged at a proper position in the first state: a raised portion is positioned in an upper direction orthogonal to the substrate with respect to a lug portion of the cable; the second main surface is parallel to the first main surface, when the cable is not arranged at the proper position: the raised portion is configured to interfere with and overrides the lug portion; the second main surface is not parallel to the first main surface; and the recognition portion does not protrude from the rear surface or protrudes in a smaller amount compared to the case when the cable is arranged at the proper position, characterized in that in the proper position the recognition portion protrudes from the rear surface of the insulator, and a distance from the rotation axis to a leading end of the recognition portion in a direction orthogonal to the second main surface is larger than a distance from the rotation axis to the rear surface. an insulator that includes a first main surface being a surface that is configured to face a cable, and a rear surface being a surface on an opposite side of the first main surface; a contact that is configured to electrically connect the cable and a substrate; and an actuator that is rotatable about a rotation axis parallel to the substrate between a first state in which the actuator is closed and a second state in which the actuator is open, wherein the actuator includes a plate-shaped side wall that intersects with the rotation axis, the side wall includes: a base portion including a second main surface being a surface that faces the first main surface when the actuator is rotated in a direction closer to the cable; and a recognition portion that protrudes from the base portion, a base portion including a second main surface being a surface that faces the first main surface when the actuator is rotated in a direction closer to the cable; and a recognition portion that protrudes from the base portion, when the cable is arranged at a proper position in the first state: a raised portion is positioned in an upper direction orthogonal to the substrate with respect to a lug portion of the cable; the second main surface is parallel to the first main surface, a raised portion is positioned in an upper direction orthogonal to the substrate with respect to a lug portion of the cable; the second main surface is parallel to the first main surface, when the cable is not arranged at the proper position: the raised portion is configured to interfere with and overrides the lug portion; the second main surface is not parallel to the first main surface; and the recognition portion does not protrude from the rear surface or protrudes in a smaller amount compared to the case when the cable is arranged at the proper position, characterized in that in the proper position the recognition portion protrudes from the rear surface of the insulator, and a distance from the rotation axis to a leading end of the recognition portion in a direction orthogonal to the second main surface is larger than a distance from the rotation axis to the rear surface. the raised portion is configured to interfere with and overrides the lug portion; the second main surface is not parallel to the first main surface; and the recognition portion does not protrude from the rear surface or protrudes in a smaller amount compared to the case when the cable is arranged at the proper position, characterized in that in the proper position the recognition portion protrudes from the rear surface of the insulator, and a distance from the rotation axis to a leading end of the recognition portion in a direction orthogonal to the second main surface is larger than a distance from the rotation axis to the rear surface.