a plug and receptacle assembly comprises a plug connector and receptacle connector , for high - density interconnections of data cable . the two connectors are fully shielded and include a mating profile including a modified d - shaped configuration . the receptacle assembly includes a plurality of overmolded webs of lead frames . the webs are overmolded laterally asymmetric to provide a thin web on one side , and a thick web on the other , where air pockets project through the thick webs and expose portions of contacts . the overmolded webs are stacked one against the other such that thin webs are positioned intermediate contacts in the same pair , whereas the thick webs , and air pockets are positioned one against the other in adjacent contacts of adjacent pairs .