A high speed communication jack including a housing including a port for accepting a plug, the port including a plurality of pins each connected to a corresponding signal line in the plug and a shielding case surrounding the housing. A flexible circuit board between the shielding case and the housing having a substrate, a plurality of vias extending through the substrate with each via being configured to accommodate a pin on the housing, a plurality of traces on a first side of the substrate, with each trace extending from a corresponding one of the plurality of vias, and a shielding plane on a second side of the substrate opposite the first side of the substrate.