After installing a WS-X6624-FXS card in our 6509 switch, the card was recognized by the switch but shows to be in a "PwrDown" state. I'm aware this is an old card and is EOL, but we'd like to use it if possible. Have found some notes about IOS version and supervisor version compatability with this card but it's difficult to get a clear answer on this. Is there any version of IOS that would be compatible with both the Sup720's and the WS-X6624-FXS? If not a version compatability issue, any suggestions for getting the card out of this power down state would be most welcome... Thanks!