HSDPAUSBMODEM(ModelNo.:H670) ProductDescriptionKeyFeatures:SupportHSDPA 850900、19002100MHz,GSM/GPRS/EDGE850/900/1800/1900MHzUSBslotSMSMessageDataserviceT-FlashCardDatatransmissionupto7.2Mbps(HSDPA)Datatransmissionupto384Kbps(UMTS)Datatransmissionupto384Kbps(EDGE)High-capacityphonebook/SMSbox EnvironmentalSpecifications:OperationTemperature:-20~55StorageTemperature: -30~65Humidity: 93%Vibration(non-operating):15gpeak,10~500HzOperatingsystemsWindows 2000,Windows XP,Windows Vista,UBUNTU8.04,macosx10.4 SellingPoint:Highspeedtransmitrate(Downlink7.2Mbps/Uplink384Kbps)USBConnectorTypeAutoinstallationT-FlashCard(upto4GB) Frequencyband:UMTS2100: 1920~1980MHz 2110~2170MHzGSM850 824~849MHz 869~894MHzEGSM900: 880~915MHz 925~960MHzDCS1800: 1710~1785MHz 1805~1880MHzPCS1900 1850~1910MHz 1930~1990MHz