Abstract: According to at least one of the disclosed embodiments of the present invention, there is disclosed a rack mountable computer component which is in the form of an open computer component or blade construction which is adapted to be mounted in a generally upright or vertical disposition within a rack. The operative components such as mother boards are mounted at the front of the component or blade to permit access by the user thereto. The operative components are cooled by vertical air flow relative to the mounted blade to facilitate cooling thereof.