Update 2020:
Sorry for my Englich :-).
I use the Belkin F5U258 and Windows 7.
You can buy it on ebay:
https://www.ebay.de/itm/333601591615He shipped to Germany :-) Thank you.
This Cable work on XimLink and SandhawkC
You can use XIM4 Firmware 20171004.
If you see Aux Button 12 is triggert.
You have a PS4Pro and the wrong Firmware :-).
Tutorial:
You must know. Bluetooth and Data Cable dont work together.
Disable Bluetooth on your Mobil Phone.
If you use the Bluetooth config, you must disconnect the Data Cable from the PC the Xim 4 from PS4.
1. Installe the XIM4 Manager
1.1. For the first time connect the Data Cable and wait for Driver install
2. Connect the Xim 4 to PS4 and the Data Cable to the PC
3. Start SandhawC an click on "Connect to Xim 4 Manager
4. Start the polling

5. Use the Pause Key to activate / deactivate
If you have errrors
1. Make a Facktory reset with the Firmware Tool
2. Disconnect the Data Cable from the PC the Xim 4 from PS4
3. Connecht the Xim 4 to PS4 and the Data Cable to the PC