While inzone's riser idea is great, the performance of a 16x card will be limited to 1 lane of PCIe. This is not enough for a video card other than the least performing cards available. If you are wanting to play 3d games using this card, I don't think it will work out the way you intend. Make sure you don't spend more than $50 on a card, the performance will not be realized. Most of the cards listed on the amazon link are not good for gaming, they are there for 2 or more monitor setups. I am assuming these expansion slots were more for things like USB or audio cards rather than video cards.