Adaptec AUA-1420A CardBus USB Enhanced Host Controller : Our High-speed 2-port USB CardBus Adapter lets you take advantage of the most current high-speed devices without compromising the connectivity with your existing ones. Along with the dramatic increase in speed you'll also appreciate that our solution doesn't require a heavy and bulky power supply as it is powered directly from the USB ports. This becomes especially important while traveling. No need to pack that extra bag.