Frequency Band: GSM/GPRS/EDGE: 900/1800/1900 MHz UMTS: 2100 MHz External Interface Antenna: Internal antenna USB: Mini USB interface: supporting USB 2.0 Full Speed Power: Powered via the USB interface SIM/USIM Card: standard 6 PIN SIM card interface, compaliant with 3GPP 31.101 and 31.102 AT Interface: 3GPP TS27.005/3GPP TS27.007supported Main Features: Zero-CDROM autoinstallation: Supported One button connect/disconnect: Supported Dimension (mm): 89(D)?7(W)?1.5(H) LED: Blue LED: It is blue when connect to PC by USB interface successfully. RedGreen LED: Red-green flash in turn when search net. If register to GSM net,it is Red. It is green when register to UMTS net. SIM/USIM Pin lock: enable/disable SMS and Data service simultaneously Operation: Supported Operate system: Win2000/ XP/VISTA Languages support: English, Italian, Simple Chinese, Traditional Chinese, more languages could be supported upon requested Hardware Platform: Qualcomm MSM6260 SMS: SMS Capability: 255 in Modem Group messages: Supported new SMS: Supported send SMS: Supported save SMS to drafts: Supported reply SMS: Supported forward SMS: Supported SMS: Supported import SIM/Modem to PC: Supported Phone Book Phone Book Capability: 100 in Modem Card version: 2.1/3.0 new contacts: Supported edit contacts: Supported contacts: Supported send SMS: Supported move between Modem, SIM card and PC: Supported