Batteries and battery chargers; Calculating machines and data-processing equipment; Data cables; Electrical plugs and sockets; External computer hard drives; Loudspeakers, headphones, microphones and CD players; Portable power chargers; Power strips; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, fiber-to-the-h...