ExpressCard / 34 / 54 to USB 2.0 Adapter usb port mac pc laptops desktop Brand New in Retail Box ExpressCard /34/54 to USB2.0 Adapter Compliant with USB 2.0 and USB 1.1 standard Suitable for desktop or laptop equipped with USB port Allows USB base ExpressCard module working via USB port Compatible with Mac and PC laptops CE FC RoHS complies