Difference between USGMII and USXGMII: USGMII is used for 8x10M/100M/1GE network ports, with each port maximum speed of 1GE. USXGMII-Single Port version can be used to support ONE network port with 10M/100M/1G/2.5G/5G/10G data ratesUSGMII is used f...