Plug-in connector arrangement for connecting a cable to an electrical component, comprising: a plug-in unit and a mating plug-in unit which can be connected to the plug-in unit, wherein the plug-in unit and the mating plug-in unit each have an outer conductor element (6; 7), an insulator element (8; 9) and an inner conductor element (10; 11), the insulator element (8; 9) is arranged within the outer conductor element (6; 7) and comprises an inner conductor channel (12; 13) in which the inner conductor element (10; 11) is arranged, the plug-in unit has a first plug-in side, the insulator element of the plug-in unit at least partially forms a plug-in profile at an end facing the first plug-in side, which plug-in profile runs around the inner conductor channel at least in sections and has at least one raised portion and/or recess; the mating plug-in unit has a second plug-in side, the insulator element of the mating plug-in unit at least partially forms a mating plug-in profile at an end facing the second plug-in side, which mating plug-in profile corresponds to a negative shape of the plug-in profile at least in sections, wherein the plug-in unit and the mating plug-in unit can be connected to each other in such a way that the plug-in profile and the mating plug-in profile bear against each other at least in sections, characterized in that the plug-in profile is partially formed by the inner conductor element of the plug-in unit and/or the mating plug-in profile is partially formed by the inner conductor element of the mating plug-in unit, wherein the inner conductor element (10; 11) of the plug-in unit and/or the mating plug-in unit has a profile portion in the region of the plug-in profile and/or the mating plug-in profile and the inner conductor element (10; 11) has a targeted shaping, which enables the plug-in profile and the mating plug-in profile to particularly conformally bear against each other. a plug-in unit and a mating plug-in unit which can be connected to the plug-in unit, wherein the plug-in unit and the mating plug-in unit each have an outer conductor element (6; 7), an insulator element (8; 9) and an inner conductor element (10; 11), the insulator element (8; 9) is arranged within the outer conductor element (6; 7) and comprises an inner conductor channel (12; 13) in which the inner conductor element (10; 11) is arranged, the plug-in unit has a first plug-in side, the insulator element of the plug-in unit at least partially forms a plug-in profile at an end facing the first plug-in side, which plug-in profile runs around the inner conductor channel at least in sections and has at least one raised portion and/or recess; the mating plug-in unit has a second plug-in side, the insulator element of the mating plug-in unit at least partially forms a mating plug-in profile at an end facing the second plug-in side, which mating plug-in profile corresponds to a negative shape of the plug-in profile at least in sections, wherein the plug-in unit and the mating plug-in unit can be connected to each other in such a way that the plug-in profile and the mating plug-in profile bear against each other at least in sections, characterized in that the plug-in profile is partially formed by the inner conductor element of the plug-in unit and/or the mating plug-in profile is partially formed by the inner conductor element of the mating plug-in unit, wherein the inner conductor element (10; 11) of the plug-in unit and/or the mating plug-in unit has a profile portion in the region of the plug-in profile and/or the mating plug-in profile and the inner conductor element (10; 11) has a targeted shaping, which enables the plug-in profile and the mating plug-in profile to particularly conformally bear against each other.