. Providing speeds up to 10x faster than that of USB 2.0 this PCI Express USB 3.0 card enables you to access your data and transfer files much faster than USB 2.0 by adding two USB 3.0 ports to your PCI Express capable PCFeaturing a native NEC PCI Express host controller chipset the new USB 3.0 standard supports transfer rates of up to 5Gbps while still providing connectivity and support for the older USB 2.0 (480Mbps) and 1.1 (12Mbps) devicesIn addition to providing a much faster transfer rate the PEXUSB3S2 USB 3.0 card also supplies 900mA of power per USB port allowing more and more external devices to operate without the need of an additional power source..