... 1,gsm usb modem for gsm sim card 2,sending bulk SMS 3,with ... or large townshipProduct Feature 1, can insert 32 SIM cards(big or small) 2, connection with the ... 900/1800/1900MHz or 900/1800 Mhz32 x SIM card(big/small) slotsComply with GSM phase2 standardSend and ... R2)--Windows 2000 (Server and Pro)1, Insert Sim card into device2, Install Driver. We will send to ... channel GSM usb modem for gsm sim card