If you go to Google Search results with websites that may have the requested driver. The HSDPA USB MODEM driver works with Windows XP, Windows Vista, Windows 7, and Windows 8. For more other information and also for a download link access the link that I shared above.
In some cases you might need to use the Device manager to manually update the driver after it has been installed. Simply right click the item in Device manager and select Update Driver then follow the instructions.