The DVI to VGA adapter simply allows connection to the analog outputs on the DVI-I card socket. DVI-I has both Analog and DVI available, DVI-D has no analog
I would predict that no display would be seen if the card only had DVI-D connectors, but you need to read the specs of your graphics card and make sure the outputs are DVI-I
I would predict that no display would be seen if the card only had DVI-D connectors, but you need to read the specs of your graphics card and make sure the outputs are DVI-I