Apparently, for Soyo the first one is an old 3.3V video card that can have an extra notch thingy (Pro position when not a Pro card I think) to hold the card in or not. The 1.5V card Soyo shows can also be a 3.3V. The new 1.5V cards look similar to the old 3.3V picture Soyo shows except the shorter length slot is now in the middle adajcent to the extra notch thingy. Check the links in that other forum and you'll see what I mean.