Cable modems; Computer network adapters; Computer network switches; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, optical receivers; Electronic and optical communications instruments and components, namely, optical transceivers; Electronic and optical communications instruments and components, namely, optical transmitters; Electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; Ethernet adapters; Ethernet transceivers; Fiber optics; Junction sleeves for fibre optics; Optical fiber connectors; Power over Ethernet (PoE) network components in the nature of switches; Power over Ethernet (PoE) network components in the nature of splitters; Power over Ethernet (PoE) network components in the nature of midspans; Power over Ethernet (PoE) network components in the nature of injectors; 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 presence management products, namely, switches, and console, alarm, sensor and power management devices; Wireless routers