A structure of a server rack and sidecar combination. The structure may include; a server rack having an opening and a server door on a front side of the server rack; a sidecar mounted to a side of the server rack, the sidecar has an access area on a front side of the sidecar, wherein the server rack opening and the access area are accessible form a common side; an adapter mounted to the accessible common side, wherein the adapter does not restrict access to the server rack opening and the access area, the adapter has at least three vertical sides; and a cable management bar located within the at least three vertical sides.