The device is controlled via a standard Windows DLL contained in the file WRG20DWC_API.DLL.
There are two drivers, 32-bit and 64-bit, suitable for Windows 7, 8 and 10. The appropriate driver suited for the host operating system will be installed.
The WRG20DWC_API.DLL file is supplied as part of the G20DWC installation package.
The G20DWC installer can be also downloaded here.