Has anyone seen this before? I can't find a letter to designate which model it is for RNS-E support. Am I looking in the wrong place? Isnt it usually at the end of that string near the top of the unit?
Never trust the label on top, always check with a VAG-COM or go into engineering mode to see what part number you are looking at. Depending on your source you may have an A6 faceplate with an A3 main bord and an A4 radio tuner or any other combination.
The only two RNS-E part numbers without index letter are the very first A3 unit 8P0 035 192 and the very first A4 Cabrio unit 8H0 035 192. Anything else should have an index letter.