Features: Brand new and high quality Support HSDPA/ UMTS 2100MHz Qualcomm MSM6280 chipset Max 72 Mbps downlink and 18Mbps uplink HSDPA network always-on, users maintain contact with the network at any time Mini USB standard interface, support hot-swappable plug-and-play Support Data, SMS and USSD functions Support Internet traffic statistics history Operating System: for Windows2000/ 2003/ XP/ Vista/ for Windows 7/ for Mac OS/ for Linux Built-in driver, automatic installation Receiving Sensitivity: under -104dBm Working temperature: Storage temperature: -20C ~ +55C; working temperature: -30C ~ +65C" Humidity: 93% Specifications: Color:white ,BlackSize: 9cm x 26cm x 11CM Net weight:20g Package weight:27g Package Included: 1x HSDPA EDGE 72Mbps Wireless USB20 3G Network Modem Adapter With SIM Card Slot