Detailed product description Hsdpa usb modem with t-flash With tiny design and high speed, hsdpa usb modem v818t provides audio, sms and extended mass memory function as well ashigh speed internet access to hsdpa and umts networks worldwide. Main features Hsdpa/umts Hsdpa packet data service with a maximum transmission rate of 3.6mbps Umts packet data service with a maximum transmission rate of 384kbps Edge packet data service with a maximum transmission rate of 236.8kbps Sms service Auto installation, convenient for use Windows 2000 and windows xp operating system Interface:usb 2.0 Antenna: internal antenna Sim/usim card: standard 6 pin sim card interface Specifications Hsdpa/umts: 3gpp r99, r5 Gsm/gprs/edge: 3gpp r99 Operating frequency Hsdpa/umts 2100mhz Gsm/gprs/edge not support Dimensions 89 mm (d) x 28 mm (w) x 12 mm (h)