Cables for electrical or optical transmission; cable connectors; electrical cable patch cords; coaxial cables for transmission of data; optical cable patch cords; communication racks, cabinets, enclosures, and patch panels specially adapted for use in housing cabling or wiring or for use in housing communications equipment; cable reels; face plates for use in cabling or wiring; electrical cable outlets; optical cable outlets; multi-media boxes and enclosures specially adapted for housing cabling or wiring, for connecting multimedia devices or input streams, or for housing communications equipment; cable or connectivity management and installation accessories, namely, filler panels, grounding bars, power panels, reducers, patch panel kits comprised of patch panels for housing electrical connectors and electrical switches, and line signal splitters; cable or connectivity management and installation accessories, namely, seismic anchoring kits comprised of vibration-resistant housings specially designed for communications racks and communications equipment cabinets; data center structured cabling and network physical infrastructure system comprised of cable connectors, patch panels, enclosures, and cable assemblies, all for use in cabling or wiring or in housing communications equipment