Audio- and video-receivers; Cables, electric; Calculating machines; Computer keyboards; Computer mouse; Computer operating programs, recorded; Computer peripheral devices; Computers; Converters for electric plugs; Data processing apparatus; Data processing equipment, namely, couplers; Disk drives for computers; Document printers for use with computers; Earphones; Electric discharge tubes, other than for lighting; Electrical plugs and sockets; Interfaces for computers; Light emitting diodes (L...