IOGEAR SuperSpeed USB 3.0 ExpressCard GEU302 (Black/Silver) Hot-Swapping Feature Allows to Connect/Disconnect Devices without Powering Down the System Backwards Compatible to USB 2.0 and USB 1.1 Devices 2 Downstream Ports for All USB Devices Fully Compliant with USB 3.0 Revision 1.0 Spec and with ExpressCard 1.0 Spec ExpressCard 34 Form Factor