Computer network switches; Computer network adapters, switches, routers and hubs; Electronic and optical communications instruments and components, namely, optical transmitters; Ethernet switches; Ethernet transceivers; Fiber optic connectors; Fibre-optic cables; Local switches; Optical fibres; Telecommunication cables; Telecommunication switches; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-...