Transceivers; Calculating machines, data processing equipment and computers; Coaxial cables; Computer hardware; Computer network adapters, switches, routers and hubs; Electronic and optical communications instruments and components, namely, optical transceivers; Ethernet cables; Fiber optic cables; Network cards; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, ...