64-bit PCI-X + 32-bit PCI Riser Card for 2U IPC chassis and slim server case. With PCI flexible cable link for special motherboards with PCI-X + PCI channels such as ASUS NCLV-D and TYAN S5112. .** For GH-U64X(-CX), the 6th slot on the motherboard must be multi-slot channel and the PCI-Link should be installed in same channel. * Obsolete