Electrical plug-in connector for transmitting a differential signal between a first interface and a second interface, comprising a pair of contact elements having a first contact element (7 1) and a second contact element (7 2), a longitudinal axis of the first and of the second contact element (7 1, 7 2) in a first longitudinal portion of the first and of the second contact element (7 1, 7 2) at the first interface being oriented at a first angle (Φ 1 ') with respect to the longitudinal axis of the first and of the second contact element (7 1, 7 2) in a second longitudinal portion of the first and of the second contact element (7 1, 7 2) at the second interface, respectively, a first plane (19 1) spanned by the longitudinal axis of the first and of the second contact element (7 1, 7 2) in the first longitudinal portion being oriented at a second angle (Φ 2 ') with respect to the longitudinal axes of the first and of the second contact element (7 1, 7 2) in the second longitudinal portion, a third longitudinal portion of the first and of the second contact element (7 1, 7 2) being realized between the first and the second longitudinal portion (14, 15) of the first and of the second contact element (7 1, 7 2), respectively, in the third longitudinal portion, the first and the second contact element (7 1, 7 2) each being bent, relative to a first axis of rotation (17 1) that is oriented orthogonally with respect to the longitudinal axis of the first and of the second contact element (7 1, 7 2), respectively, in the first and in the second longitudinal portion (14, 15), respectively, through a first angle of rotation Φ 1 corresponding to the first angle Φ 1 ', characterized in that, in the third longitudinal portion the first and the second contact element (7 1, 7 2) each being additionally bent in such a way that the longitudinal axes of the first and of the second contact element (7 1, 7 2) are shifted in parallel, through a second angle of rotation Φ 2, relative to a second axis of rotation (17 2) that extends centrally between the first and the second contact element (7 1, 7 2) in the third longitudinal portion, and the second angle of rotation Φ 2 resulting from subtraction of the second angle Φ 2 ' from an angle of 90°. a longitudinal axis of the first and of the second contact element (7 1, 7 2) in a first longitudinal portion of the first and of the second contact element (7 1, 7 2) at the first interface being oriented at a first angle (Φ 1 ') with respect to the longitudinal axis of the first and of the second contact element (7 1, 7 2) in a second longitudinal portion of the first and of the second contact element (7 1, 7 2) at the second interface, respectively, a first plane (19 1) spanned by the longitudinal axis of the first and of the second contact element (7 1, 7 2) in the first longitudinal portion being oriented at a second angle (Φ 2 ') with respect to the longitudinal axes of the first and of the second contact element (7 1, 7 2) in the second longitudinal portion, a third longitudinal portion of the first and of the second contact element (7 1, 7 2) being realized between the first and the second longitudinal portion (14, 15) of the first and of the second contact element (7 1, 7 2), respectively, in the third longitudinal portion, the first and the second contact element (7 1, 7 2) each being bent, relative to a first axis of rotation (17 1) that is oriented orthogonally with respect to the longitudinal axis of the first and of the second contact element (7 1, 7 2), respectively, in the first and in the second longitudinal portion (14, 15), respectively, through a first angle of rotation Φ 1 corresponding to the first angle Φ 1 ', characterized in that, in the third longitudinal portion the first and the second contact element (7 1, 7 2) each being additionally bent in such a way that the longitudinal axes of the first and of the second contact element (7 1, 7 2) are shifted in parallel, through a second angle of rotation Φ 2, relative to a second axis of rotation (17 2) that extends centrally between the first and the second contact element (7 1, 7 2) in the third longitudinal portion, and the second angle of rotation Φ 2 resulting from subtraction of the second angle Φ 2 ' from an angle of 90°.