The U3-PCIE2-2P0 is Point Grey’s dual port PCI Express to USB 3.0 host controller card. This card is specifically designed to maximize performance with Point Grey's USB 3.0 cameras.  It’s fully compliant to the SuperSpeed USB Specification Rev 1.0 and the xHCI (eXtensible Host Controller Interface) Specification Rev 1.0. and it is also backward compatible with USB 2.0 and USB 1.1.