A connector (2) for establishing a plug connection with a mating connector (3) by plugging together the connector (2) with the mating connector (3) along a plugging direction (P) comprises at least one connector element (22a, 22b,...), a connector housing (23) being delimited by outer walls (231), at least one resilient element (24a, 24b), and a guiding element (2l).The guiding element (21) is arranged centrally on the connector (2) with regard to the outer walls (231) of the connector housing (23). A connector system (1) comprises such a connector (2) and a mating connector (3), wherein the mating connector (3) comprises a mating connector housing (33) being delimited by outer walls (331), at least one connector element (32a, 32b,...), and a receptacle (31) for receiving the guiding element (21) of the connector (2). The receptacle (31) is arranged centrally on the mating connector (3) with regard to said outer walls (331) of the mating connector housing (33).