... a 2 Port USB 3.0 PCI Express Card which complies with USB 3.0 Specification, and Intel's extensible Host ControllerInter This ... with USB 3.0 Specification, and Intel’s extensible Host Controller Interface (xHCI). It has PCI Express® bus interface, and it is applicable ... revision 0.953,Compliant with PCI Express® Base Specification 2.04,Max 900mA output per port.5,Support OS:Window Vista, Window XP ...