Detailed Product Description TD-T33HProducts overview:The td-scdma/EDGE dual-mode USB ModemTechnical indicators:Product specifications-interface :USB type -driver: auto install-size: 93*29*15 (mm),-antenna: built-in -storge: with 512Mbits storage spacePerformance indexWorking frequency EDGE/GPRS:GSM900MHz,GSM1800MHz,TD-SCDMA: 2010~2025MHzDats translate : DL: 2.8 Mbps, UL, 384Kbps,working voltage ...