Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; Computer network hubs, switches and routers; Computer network routers; Computer network adapters, switches, routers and hubs; Ethernet adapters; Ethernet switches; USB wireless routers; Wireless routers; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches inc...