Cabinets for loudspeakers; Cameras; Central processing units (CPU); Compact disc players; Computer keyboards; Computer peripheral devices; Computers; Data processing apparatus; Digital photo frames; Earphones; Electric navigational instruments; Headsets for mobile telephones; Loudspeakers; Megaphones; Microphones; Mouse pads; Notebook computers; Pocket calculators; Smartglasses; Tape recorders; Blank USB flash drives; Computer mouse; Data processing equipment, namely, couplers