usb modem 1.RJ45 gsm modem 2.RJ45 GSM Modem 16 3.For sending bulk SMS&USSD 16 ports RJ45 GSM Modem usb modem: There's four ... support MT, MO, CB, Text and PDU mode usb modem Power consumptionvoltage : 3.6VClass4(2W@900MHz)Class1(1W@1800/1900MHz),Single-channel ... cable.2, Insert Sim card into device3,Install Driver usb modem usb modemusb modemusb modem 16 ports GSM SMS Modem, RJ45 gsm modem,usb modem