Before You Buy
How can I tell if this DVI to VGA adapter is compatible with my setup?
In order for this DVI to VGA adapter to operate correctly in your setup, make sure that the following is true:
The video source is DVI-I or DVI-A (analog signals must be present).
The video destination is VGA.
DVI to VGA adapter cables are passive and simply use the pins from a DVI-I source to convert to VGA.
Note: The analog VGA signal (DVI-A) must be present on the DVI-I interface. Some DVI-I receptacles may have all 29 pins for DVI-I, but only have a DVI-D signal present. To determine what type of DVI port you have, refer to http://www.startech.com/faq//video_signal_converters_dvi_interface.