high speed usb modem 1.Rate: 153.6 Kbps (Up) ... 3.System:Win2000/XP/VISTA/7/Mac 4.Voice SMS high speed usb modem Description : 1,Standard USB connector , insert ... source management, it can keep good data delivering speed in super speed train and automobile .5,Connection rate: under the ... 6,The link speed is quick, it is less than 5 seconds from dial numbers to connection internet successfully7,Support ...