USB HSUPA Modem 7.2Mbps DL,5.76Mbps UL UMTS 2100Mhz SD(TF) Card Supported ... ! Model MH71Zero CD,Support MAC OS,LUNIX,Win 7 all SystemSolutionQualcommMSM 6290Technical StandardHSDPA7.2Mbps DL,5.76Mbps ULUMTSup to 384 Kbps DL ... Start Guide1Micro SD card SupportedUp to 4GBSystemWin2000/ XP/VISTA Win 7,Mac OSSoftwaresupport SMS,Phone book, internet,setting and Voice function ...