... Host ControllerInter This is a 2 Port USB 3.0 PCI Express Card which complies with USB 3.0 Specification, and Intel ... Host Controller Interface (xHCI). It has PCI Express® bus interface, and it is applicable for PCI Express solution for host PC system. It works ... Host Controller Interface (xHCI) Specification revision 0.953,Compliant with PCI Express® Base Specification 2.04,Max 900mA output per port.5 ...