This is a PCIe 2.0 x1 host bus adapter (HBA) with dual USB 2.0 ports. This PCIe card expands your PC by adding two high-speed USB 2.0 devices from your standard desktop PC. Our serial cards are 100% compliant, and offer a cost effective solution for all of your network upgrade needs. With our certification test program, we guarantee your product will work right the first time.