Detailed Product Description hsdpa usb modemNM620 is a HSDPA data card, dimension: 86×27×12.5mm 2.Hardware specifications: ... InterfaceUSB2.0 Network supportGSM/GPRS/EDGE/HSDPA FrequencyHSDPA/HSUPA/UMTS 2100 MHzGSM/GPRS/EDGE 850/900/1800 ... -installation Support Windows 2k, XP, Vista 3.2. Data Transfer HSDPA 3.6Mbps, UMTS DL/UL 384Kbps 3.4. SMS 3 ...