The HSDPA USB Modem is a perfect 3.5G-enabled device to offer Internet access via HSDPA network at maximum download speed of 7.2Mbps and upload speed of 384kbps. And it can work on tri-band HSDPA/UMTS and quad-band GSM EDGE/GPRS networks anywhere in the world. With its pre-installed software and drivers, you can directly plug it to the USB port of any Windows® laptop or desktop PC without installation from a CD. The device also supports up to 8GB memory expansion with a MicroSD card slot, no matter if it is connecting to the Internet. The compact size is small enough to fit in your pocket and carry around. Features  Applicable to worldwide tri-band HSDPA/UMTS and quad-band GSM EDGE/GPRS network;Support sending and receiving SMS messages;Support MicroSD memory expansion (optional);No CD required for software installation on Windows®.  Specifications 
SpecificationsSupported Network/TechnologyTri-band HSDPA/UMTS 850/1900/2100 MHz 3GPP R5
Quad-band GSM EDGE/GPRS 850/900/1800/1900 MHz 3GPP R99Maximum Data SpeedDownload: 7.2Mbps / Upload: 384kbpsInterface* USB 2.0 interface
* Internal antenna
* SIM card slot
* MicroSD slot (optional)
* 1 LED indicator: real-time service status, technology mode, and error statusMicroSD ExpansionSupport memory expansion of up to 8GB (optional)System Requirements for Computer* USB interface
* Min. memory: 32 MB
* Min. disk space: 32MB
* Min. CPU speed: Pentium 150MHz or higher
* Operating System: Windows® 2000 / XP / VISTADimensions86mm X 27mm X 10mmWeight30 gPacking Dimensions136mm X 127mm X 17mmPacking Weight100 gTemperature RangeOperation: -30°C ~ +70°C / Storage: -40°C ~ +85°CRelative Humidity Range≤ 95% (non condensing)