CY PCI-E Express 16X to 16x Male to Female Riser Extender Card Ribbon Cable 20cm PCI-E Express 16X to 16x Male to Female Riser Extender Card Ribbon Cable Layer PCB bard designing. 1-slot PCI-E 16X riser card with normal ribbon cable. High speed FFC cable is flexible for 1U,2U,3U chassis Support PCIe 1X card and 4X,8X,16X card( only provide 1X speed)