Abstract: This invention discloses an electronic computer network connector system for interfacing control signals at a remote workstation. The connector system includes a cartridge member for modularly housing a distributed control electronic card assembly. The cartridge member and the electronic card assembly form a module. The electronic circuitry of the module provides intelligence for operation of the workstation. Also included in the connector system is a bus rail backplane assembly for electronically interfacing with a host computer system, multiple workstations, with other modules associated with their respective workstation, all in a local area computer network system. The backplane assembly includes a printed wiring board having a cartridge receptacle for detachably retaining the module's cartridge member, service connectors for coupling common signals from the host computer to the module, coupling signals to an associated workstation, to other modules and to other workstations.