If I'm looking at the same 8500GT you are, it should come with one VGA port, which is older, and a DVI port, which is newer. It may also be two DVI connections. It's for dual monitors or one of either kind. The cable that comes with the 8500 is for HDTV and S-Video Output. If you don't know what it is, you probably don't need it.
Edited by Ryan 3000, 22 August 2007 - 12:27 PM.
No pessimist ever discovered the secrets of the stars, or sailed to an uncharted land.