An actuation assembly and method is provided for mating electronic unto a computer rack comprising a main housing engageably securable to a slide assembly. The slide assembly is capable of being secured to a side of the computer rack and having sliding features such that the slide assembly and the main housing when engaged can be telescoped out or returned to a closed position. The main housing having a vertical wedge for securing said assembly to said rack more securely and a drive wedge for moving the vertical wedge such that it can telescope into and out of said rack with said slide mechanism via a lead screw.