only for express cards 34mm with usb controller supports expdress card umts 3g cards (3.3v;+1,5v) usb2.0 specification data transfer rate up to 48-mbps hot-plug.hot swap for windows me/2000/xp,vista,mac os 10.1.3 or higher system requirements notebook or pc with a free usb port windows me/2000/xp,vista,mac os 10.1.3 or higher
