A method for communicating data and control from a host computer to a device is provided. In one embodiment, the boride layer is formed by chemisorbing monolayers of a boron-containing compound and one refractory metal compound onto a substrate. A drive chassis tray is coupled to the interface card having a plurality of second vent openings. An exhaust fan is mounted on the housing above the second inlet region while an air supply fan is mounted in the housing on the downstream side of the mixing chamber.