9 [ Electric, electronic, measuring, signaling, checking, and supervision apparatus, instruments and installations, namely, switches, switch boards, electric switch blades, [computer cables, electrical cables, ether net cables; electric sockets and plugs; coaxial cables; ]electrical ducts and ducts for fiber optic cables, namely, flex ducts and on-floor ducts; ] fiber optic splice closures; telecommunications equipment, namely, cross connection cabinets, distribution housings, distribution frames, mounting channels, splice trays, bays, racks, and patch panels all for use in electronic and fiber optic hardware installations; [ fiber optic terminals; ] terminals for copper electric wires; fiber optic terminal housings, fiber optic cable guides and electrical wall outlets; [ copper wire and cable for transmission of electricity; telecommunications cables; ] anti-tangling devices for cables, fiber optics, fiber optic cables, fiber optic connectors, fiber optic couplings; telephone connectors, telephone distribution frames, telephone wiring; electronic test equipment for electrical and telecommunications systems, namely, cable testers; [ computer interface connectors; electrical switchboards, printed switchboards, electrical switches, switch boxes for electricity; mounting stands, racks and towers for electronic and fiber optic hardware installations; ] electric and fiber optic cables, [ electricity conduits, identification threads and sheaths for electric wires, electricity wire connectors, junction and distribution sleeves for electric and fiber optic cables ] ; sockets, plugs [ and other contacts for electric connections, electricity junction boxes, electricity distribution boxes, electricity plugs and fiber optic connections ]; copper components for electrical wiring and optical fiber system, namely, connection and disconnection terminal blocks for cabling systems, electrical wires and optical fiber cables; [ protection equipment for cabling systems, namely, disconnection modules, over voltage protection modules, over current protection modules; ] patch and test cords; cables for the transfer of voice, data, and video signals, namely, computer and telephone cables and computer and telephone interface connectors for voice, data and video applications; computer cables and computer interface connectors for computer networks