SGMIIandQSGMII.USGMIIprovidesflexibilitytoaddnewfeatureswhilemaintaining backwardcompatibility.Previousdefinition/implementationscoversingle(SGMII)andquad (QSGMII)options.ThisspecificationdefineUSGMIIoptiontosupport4x1GE/8x1GEnetwork portsand5G/10GPHY/MACSERDESspeedrespectively: ...