Some motherboards will get damaged if you use the wrong voltage PCI card.

You can tell the voltage of the video card if the card is made to spec. The AGP slot has multiple knotch or "key" configurations. To determine what your voltage is, look at the connector and check to see what the "keys" look like. Follow the below illustration to determine whether your card is 1.5V, 3.3V or 0.8V

Is this answer useful? Yes   No So far 383 of 734 person(s) think this answer is useful.