This PCI-Express 2.0 to USB3.0 Host Controller Card supports Super Speed USB3.0 standard. Operating at 5 Gap"s full-duplex mode. This card is 10 times faster than USB2.0 High-Speed(480 Mbps) and is also backwards compatible with current USB2.0 devices. This product is an ideal choice for desktop computers needing larger volume and higher speed data transfers with USB devices.