Modular Connector Component Description Modular Connector This tutorial illustrates the definition / description of modular connectors. A modular connector is a connector that can be recursively assembled, so that certain fields can fitted with different other parts. In the displayed example the PartVersion “4711” is a modular connector. The ConnectorHousingSpecification defines a regular Slot “A” with a number of cavities and a ModularSlot “B”. This ModularSlot is compatible to two different inserts (defined by individual ConnectorHousingSpecifications).