> First Serdes mode Second Serdes mode > Option 1 PSGMII for copper Disabled > ports 0-4 > Option 2 PSGMII for copper 1000BASE-X / 100BASE-FX > ports 0-4 > Option 3 QSGMII for copper SGMII for > ports 0-3 copper port 4 With option 2, can the second SERDES also do SGMII? You are likely to need that when a Copper SFP module is inserted into the cage. Andrew