1.HSPDA USB MODEM :7.2Mbps DL,384Kbps UL 2.UMTS2100/GSM/GPRS/ ... LUNIX,Win 7 all SystemTechnical StandardHSDPA7.2Mbps DL,384Kbps ULUMTSup to 384 Kbps DL and ULEDGE460Kbps DownloadGPRS115Kbps DownloadFrequency Band GSM/GPRS ... XP/VISTA Win 7,Mac OS.LinuxMicro SD CardSupported Up to 8GBSoftwaresupport SMS,Phone book, internet,setting Weight(g) 20 ... 0.8(H)USB Speed USB 2.0 High speed huawei 3g usb modem