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