A plug connector module that includes a metal frame having a base portion, an insertion end and a cavity that extends from the base portion into the insertion end. The insertion end is configured to be inserted into a cavity of a corresponding receptacle connector. A substrate extends through the base portion of the frame and into the insertion end. A first plurality of external contacts is positioned in a first opening and a second plurality of contacts positioned within a second opening. One or more electronic components is coupled to the substrate, and a first encapsulant that covers and environmentally seals the one or more electronic components. A second encapsulant covers and environmentally seals a metal shield and at least a portion of a leg that extends from the shield.