... High Speed, Full Speed, and Low Speed External USB3.0 Port x 2 Pulg into PCIe Slot Introduce USB3.0 ... Features Compliant with Universal Serial Bus 3.0 Specification Revision 1.0Compliant with Intel extensible ... Interface(x HCI) Specification 0.96Two downstream ports Support Super Speed, High Speed, Full Speed, and ... Windows 7, Vista and XP High quality external 2 ports USB3.0 PCI-e Card, 2 ports ...