Printer cables; RAM (random access memory) card; Transceivers; Electronic and optical communications instruments and components, namely, optical transceivers; 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-home and ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presenc...