Model Number: U2-4 Key Specifications/Special Features: Qualcomm MSM72257.2Mbps DL, 5.76Mbps UL2G band: GSM/GPRS/EDGE: 850/900/1800/1900MHz3G band: UMTS2100MHzSupports Windows 2000/XP/Vista/Win7 (32/64 bit), Win8, Mac, Android tablet PC Model3GUSB Wi-FimodemU2 FrequencyBand GSM/GPRS/EDGE 850/900/1800/1900MHz WCDMA UMTS2100MHz MainFeatures Chipset QualcommMSM7225 DataRate 7.2MbpsDL/5.76MbpsUL SetupMode Plugandautoinstallation WIFI 802.11b/g/n user upto6users Languagesupported Chinese,English(multiple languagesupported) SystemSupported Win2000/XP/Vista/Win7(32/64bit)/Win8andabove,Mac,AndroidTabletPC ExternalInterface USBType StandardUSBinterface SIMCard StandardPINSIMcardinterface TFCard StandardTFcardslot PowerMode PoweredviatheUSBinterface