High-Speed USB 2.0 with USB 1.1 compatibility - Now you can add four high-speed, 480-Mbps USB 2.0 ports to your computer while maintaining backward compatibility with current USB 1.1 devices.
Includes USB 2.0 drivers for Windows Operating Systems - This product includes high-performance Adaptec USB 2.0 drivers for Windows 98 Second Edition, Millennium Edition, 2000 and XP specifically designed and optimized for the USB2connect 4000.
Full USB-IF Hi-Speed Certification - You get guaranteed USB 1.1 and USB 2.0 compatibility and hassle-free operation.