A connector system is provided in which a branch connector may be secured in a pre-wired power and data network. The branch connector is designed to interface with existing network connections to provide at least one additional interface point for added or temporary devices. The connector may be designed to interface with existing connectors in a manner similar to existing cable assemblies, and may present sockets or similar interfaces which are substantially identical to the interface to which the connector is applied. Expanded network connectivity is thus provided for additional devices or temporary devices, such as programming, logging, system configuration and troubleshooting, and similar applications.