This 2 Port CardBus USB 2.0 Adapter adds two USB 2.0 ports to your laptop or desktop computer, with support for full hi-speed USB data transfer rates of up to 480 Mbps. The USB 2.0 CardBus adapter offers backward compatibility with USB 1.1 devices, ensuring seamless operation with older USB peripherals and supports hot-swappable operation to provide hassle-free peripheral connections without having to reboot the computer.