Detailed Product Description 3G EVDO wireless modem,3G Evdo modem,3G Evdo data cardCDMA 2000 1X 800MHz EVDO RevOHigh Data Transfer RateDL 2.4MbpsRoaming automaticly on EVDO and CDMA networks.Support Data, voice and SMS functionPlug & PlayUSB Interface for desktop and laptopSupport Windows 2000, XP, Vista, Mac OS,LinuxDimension: 91mm×25mm×11mm