USB to Express Card USB interface,Support hot-swappable Provide a ExpressCard slot Compatible with PC & MAC systems USB TO EXPRESS card1,USB interface,Support hot ... /54mm PC Card3,Support USB interface design ExpressCard PC cards, USB expansion cards, for example, EV-DO (3G), HSDPA (3.5G) broadband card4 ... and MAC systems6,Power use: DC +5 V7,NO driver USB to Express Card High Quality