3 x 64-bit PCI riser card with the top two PCI directely connected to the gold finger the third slot throught a ribbon case. For PCI-X motherboards that have the first two PCI slots in the same group. It can also be used as 2 x 64 - bit + 1x 32 -bit riser card
3 x 64-bit PCI riser card with the top PCI directely connected to the gold finger the bottom two slot through a ribbon cable. For PCI-X motherboards that have the first PCI-X slot by itself, and the next two PCI or PCI - X slots in one group