... 1. Network:HSPA/UMTS/EDGE/GPRS/GSM 2.850/900/1800/1900/2100MHZ 3g umts modemModel:LT7200U(WCDMA) WCDMA 3G ... wireless data Standard USB2.0 interface, no disk installation, plug and play, internal antenna, ... the whole circuit board design, superior performance, made with Qualcomm MSM7200 chipset,UIM. Working frequency (five bands): HSPA/UMTS:2100MHZ,GSM ...