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, overcurrent 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 ]