SIIG’s DP 4-port USB 3.0 PCIe I/E easily adds four additional USB 3.0 ports (one internal and three external) to your PCIe-enabled desktop computer enhancing your existing system with the latest USB 3.0 technology. It delivers ultra-fast USB 3.0 data transfer rates of up to 5Gb/s (up to 10 times faster than USB 2.0) for connecting a wide variety of high-bandwidth USB 3.0 devices and offers backward compatibility for previous versions of USB devices. This dual profile 4-Port USB 3.0 PCIe host adapter works with full height and low profile chassis system with the included bracket providing the utmost flexibility in system chassis installation.