Computer hardware, namely, computers, computer circuit boards, keyboards, monitors, enclosures, and thermal management fans in the nature of internal cooling fans for computers; industrial automation controls; accessories for computer hardware mounted within computer enclosures, namely, storage drawers, keyboard drawers, monitor mounts, mounting brackets, shelves, panels, rails, reducers in the nature of plates used to reduce a dimension of computer enclosures, extenders in the nature of plates used to increase a dimension of computer enclosures, and cable management devices in the nature of sheaths, ducts, and guides for electric cables; all of the foregoing specially adapted for computer hardware and electrical components for use with computers, computer data storage, and computer network equipment, in-building computer networks, data centers, computer room environments, and factory floor environments; rack-mountable accessories for computer hardware and electronic equipment, namely, rack-mountable storage drawers, rack-mountable keyboard drawers, rack-mountable mounting devices for monitors, rack-mountable mounting brackets, rack-mountable shelves, rack-mountable panels, rack-mountable enclosures, rack-mountable rails, rack-mountable rack reducers, rack-mountable rack extenders, rack-mountable cable management devices in the nature of sheaths ducts, and guides for electric cables, DIN rail shelves, DIN rail panels, DIN rail enclosures, DIN rails, and DIN rail mounting racks; all of the foregoing specially adapted for computer hardware and electrical components for use with computers, computer data storage and computer network equipment, in-building computer networks, data centers, computer room environments, and factory floor environments