DVI cables will vary and have specific uses depending on their connectors. The following is a quicksheet on their intent and what they look like when you look at the end of the cable.
- DVI-A is analog
- DVI-D is digital
- DVI-I is compatible with both
- DVI-D dual link for 3D
This communicates what you are feeding into the graphics card. Full compatibility will depend on the driver support for the graphics card in the system. Since this can change over the life of a product reverse compatibility is not always guaranteed.