wireless edge usb modem

This modem is a quadband wide range (850/900/1800/1900MHz) wireless modem supporting all the different frequencies used by EDGE and GSM/GPRS networks worldwide. It is compact and portable,and Designed to be used anywhere, anytime to access a network,the EDGE Wireless Modem offers you the freedom and convenience to have access to critical information when you are located on both EDGE and GSM/GPRS networks.only EDGE coverage and a SIM card are required for worldwide roaming and global connectivity. RECEIVE SMS MESSAGES DIAL-UP NETWORKING (DUN) MODES ACCESSING E-MAIL AND BROWSING THE WEB SIM CARD FUNCTIONALITY ZERO INSTALL SOFTWARE, NO CD REQUIRED FOR WINDOWS Network types: Quad-band GSM / GPRS / EDGE 850/900/1800/1900MHzLED indication: 1 LED Indicator SIM card interface: 3.0V interface EDGE MS Class 12 (up to 4 Tx, 4 Rx, 5 total) Dimensions :82.4*25.1*12.0mmWeight : 22g OPERATING SYSTEMS SUPPORT: Windows2000/XP/VISTA/win7/Linux MAC lastest OS 10.4EDGE high-speed data performance up to 236.8Kbps GPRS/GSM high-speed data performance up to 85.6Kbps SYSTEM REQUIREMENTS: Card Slots: USB Interface Memory: 32 MB Disk Space: 20 MB EnviromentStorage Temperature: -30 to +85 º C Operating Temperature: -20 to +60 º C Vibration (non-operating): 15g peak, 10 Hz to 2 kHz Humidity: 95% (non-condensing)