An electrical connector includes a housing which can be electrically connected on a connection side to an electrical connection part. On a contact side, one or more contacts are provided to electrically contact one or more counter-contacts of a printed circuit board. At least one latching peg assembly including two functional elements passes through an opening of the printed circuit board and can be moved by an actuation element from a non-expanded released position into an expanded latched position in which its diameter on the side of the opening which faces away from the housing is greater than the diameter of the opening of the printed circuit board. One of the functional elements is arranged on the actuation device and another element is arranged on a component of the connector which is movable relative to the actuation device.