Hope someone can answer this: I have a XFX Radeon HD 6670 1GB, DDR graphics card with 2 ports (as noted in the subject.) I am able to get one monitor to display from the DVI-D port, but have tried 3 different monitors on the DVI-I port and none would identify or work. I bought an AVG to DVI-I cable and tried that, to no avail. I am really believing that the left port (DVI-I) is bad and I should get a new card. I do not know of any other way to 'test' it. I wanted a simple dual monitor set-up. I appreciate any help you can offer.