usb stick Key Features: Wireless download speed up to 7.2 Mbps and upload up to 384Kbps Automatic Zero-CD software installation, low power consumption, accessories, lead-free. Key Benefits: High-performance wireless connection supports the latest graphic, gaming, video, and other high bandwidth applications Receive diversity on all WCDMA bands provides for reliable connection and speed, even in fringe network areas Innovative articulating hinge lets this device fit in spaces too tight for standard USB sticks Proven reliability and performance Store and share more with built-in Micro-SD slot that supports up to 4GB of memory Plug-and-play and single click installation gets users up and running quickly   (1)Suitable Network: HSDPA/UMTS (2100Mhz) GSM/GPRS/EDGE (850/900/1800/1900MHz) (2)Max Transmitting Rate: HSDPA 7.2Mbps (DL) UMTS 384Kbps (UL) EDGE 236.8Kbps (DL/UL) (3)Environmental: Operation Temperature: -20~55°C Storage Temperature: -30~65°C Humidity: <=93% Vibration (non-operating): 15g peak, 10~500Hz (4)Operating systems Windows 2000, Windows XP, Windows Vista, Windows7, MAC, Android