A connector system is described herein. The connector system includes a first connector having a first fastener and a second connector having a second fastener cooperating with the first fastener to fasten the first connector to the second connector. The first connector includes a blocking component that is moveable between a blocking position, in which the blocking component is locked and prevents cooperation of the first fastener with the second fastener, and an non-blocking position in which the blocking component allows the first fastener to cooperate with the second fastener. The second connector includes a marker interacting with the blocking component in order to unlock the blocking component when the first and second connectors are in a position for connection, thereby allowing movement of the blocking component from the blocking position to the non-blocking position. A method of assembling such a connector system is also presented.