USB to Express Card USB interface,Support hot-swappable Provide a ExpressCard slot Compatible with PC & MAC systems USB TO EXPRESS card1,USB interface ... ), HSDPA (3.5G) broadband card4,Does not support the PCI Express interface design ExpressCard cards, such as certain eSATA, Firewire IEEE1394a ... systems6,Power use: DC +5 V7,NO driver USB to Express Card High Quality