Re: SDR-4 Special Edition and W10
The soundcard in the SDR-4+ Special Edition is a generic USB soundcard that will work with all versions of Windows including Windows 10.
The driver for the frequency control can be downloaded from this web page https://pe0fko.nl/SR-V9-Si570/#install
Scroll down until you find "Install the PC driver software automatic".
Download the program "PE0FKO-USB-Driver-Installer.exe". Install this program and it will automatically load the driver and certificate to work in Windows 10.
Once the driver is installed I would recommend using the HDSDR program, I was always my favourite SDR program with the SDR-4+.