MODEL:ZX113 2U 3*PCI-64 bit 66MHz/100MHz Riser Card. Gold fingers linked with the middle riser connector is connected to the 6th PCI-64 motherboard slot, while the top and bottom riser connectors linked with 2*8-wires paddle link are connected to the nearby 5th and 4th PCI-64 slots of the motherboard.Doesn't support more than two high-speed add-in cards.Instead please use 2-channel PCI-X riser card.