A family of connectors includes a plug, receptacle and adapter with the plug incorporating beam contacts, and the receptacle and adapter incorporating interfacing arched beam contacts. A z-configuration of the port(s) within the receptacle and adapter is configured to interface with the plug, which also presents a z-configuration. The parallel, upper and lower portions of the z-configuration of the plug incorporate the beam contacts. The first beam contact of the plug is rotated 180 degrees from the second beam contact of the plug; the arched beam contacts are similarly rotated. The plug, receptacle and adapter of a small form factor that is similar or identical to the formal factor of an optical fiber LC connector. The plug and receptacle can be configured for circuit board, cable or patch cord mounting. The plug and receptacle can be utilized in a multi-plug/multi-receptacle configuration.