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The invention relates to a method for high-frequency tuning a high-frequency plug connector (1), comprising a printed circuit board (3) that has both contact points (21-28) for high-frequency contacts as well as contact points (31-38) for insulation displacement contacts. Each contact point (21-28) for the high-frequency contacts is connected to one respective contact point (31-38) for the insulation displacement contacts. Capacitive couplings, which cause a near-end crosstalk, occur between the high-frequency contacts. At least one first conductor path (46), which is connected on only one side to a contact point (26) of an electrical contact, is situated on the printed circuit board (3) that, together with at least one second conductor path (44), which is situated on and/or in the printed circuit board (3), forms a capacitor (C46). At least one frequency-dependent parameter of the device is measured, and this frequency-dependent parameter is compared to a set parameter and, according to on a difference between the two, the conductor path (46) that is contacted on one side is partially removed or completely separated. (FIG. -2)