There are only 3 types of contacts as far as I know. There is PCI, old now and hard to get very unlikely that a new card like this is a PCI one. So the card is either AGP or PCIE (PCI Express). AGP slots on the motherboard are brown. If thats what you have and the card doesn't fit then I would check the graphics card because I think you may have a PCIE one and if so then you should try to return it as it won't fit.