1,gsm usb modem for gsm sim card 2,sending bulk SMS 3, ... with bulk sms software 4,quad band 5,AT Command 32 channel USB ... 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 ... me freely! support 32 channel GSM usb modem for gsm sim card