2U 3*PCI-32bit/5V/33MHz single channel riser card w/custom length flex cable. The middle riser connector (MAIN) linked with a flexible cable is connected to the nearby motherboard PCI-32 slot (slot-1 to slot-5). The top and bottom riser connectors (SHARE) linked with 2* 8-wires paddle link are connected to the nearby PCI-32 slots.