This USB to ExpressCard Adapter allows ExpressCards to be used with any USB-capable computer, making it ideal for installing Aircards (broadband ExpressCards) or other USB based ExpressCards quickly, and easily. Even if you don"t have an ExpressCard slot available on a laptop or desktop PC or Mac, the ExpressCard to USB Adapter allows USB-based ExpressCards to be connected to the computer through a USB connection. A perfect solution for getting the most value from your ExpressCards, the ExpressCard to USB Adapter can be swapped back and forth between a notebook and desktop PC or Mac computer, allowing you to install the ExpressCard on either system - eliminating the need to purchase duplicate I/O cards for the desktop computer.