Today i installed 3rd usb in my Proace City Verso. Bought it on Aliexpress 3rd option. Had to modify the FAKRA connector, had to trim the red marked parts
Took me a while to fit it, cable is really stiff... On glovebox it's there is place prepared with a plastic plug.
It works, not with carplay, but i could play music from spotify.
So now i have usb by screen with carplay (from factory), second in glovebox, third just for charging by ventilation for second seat row (from factory).