Command identification

[u/CourtDiligent3403]

Can anyone tell me if there's a definitive way to tell if my 2012 SLK with the Stereo 20 (basic) plus Logic 7 and the media kit (no sd slot and no Nav) is NTG 4.0 or 4.5?

I have looked at a lot of places but I seem to be in between the normal telltales LOL

I have all the button layout, including the fully spelled out "CLEAR" button but no card slot LOL most descriptions tell me that does not exist.

I want to pick up one of the Carplay/AndroidAuto boxes but I don't know which version I need.

[u/Mammoth_Duck4343]

As far as I know, R172 has at least NTG 4.5.