Circuits, methods, and apparatus that may provide a separation between a signal ground and an enclosure ground such that EMI and ESD circuits are not bypassed. One example may provide a connector receptacle having fingers for contacting a device enclosure, where the fingers are not directly electrically connected to a shell of the connector receptacle. These fingers may be isolated from the shell along a top-side by an electrically insulating layer. These fingers may be further insulated from the shell along a back side by a nonconductive piece or portion of a housing.