Originally posted by tenpas
SC-65xx computer - check to verify if you have double or triple ring, I think some work with double, some triple. There are several models - heck, they probably have one out there for 10-speed already to think about too....
Both the SC-6500 and SC-6501 will work with doubles and triples. You just need to program them correctly to either include or exclude the third chainring. There's no 10-speed FlightDeck out yet that I know of.