Abstract: An apparatus is provided for mating and unmating electronic equipment to a rack in an associated electrical or electromechanical system. The apparatus is further operative to hold the electronic equipment in a mated condition to prevent separation during severe vibration or shock. The apparatus includes an actuator for moving a plurality of latches which engage hold-down brackets on the electronic equipment. The engagement of the latches on the apparatus and the hold-down brackets enables insertion, withdrawal and holding down of the electronic equipment in the rack. A clutch assembly is provided to prevent over-insertion of the electronic equipment into the rack.