Your "DVI" connector is not a DVI connector.
it should only be at most 8 pins across for a dual-link dvi (6 pins for a single link). You show 10 pins across.
Some video cards come with a special custom breakout cable/connector, are you sure you are not mistaking what you have for one of those?
It could also be an EVC connector, but those are fairly rare.
here is a pic of some video connectors.