An electrical special plug connector includes a mating space, for receiving a mating tongue of a complementary receptacle connector, with a corresponding latch extending thereinto, and further equipped with a moveable actuator to move a corresponding latch away from the mating space toward an outer position when said actuator is affected by magnetic forces derived from a special receptacle connector equipped with a magnet so as to have the special plug connector mated with the special receptacle connector with magnetic forces while keeping the corresponding latch in an inner position to interlock with a locking notch of a standard type C receptacle connector.