Think I will just have to pull mine out and have a look, but as far as I know all the M60's from 1/95 on came with a 484 DME with EWS II where the earlier ones came with the 404 DME without EWS II.
Don't actually have a problem with mine....just staring to do some research for future plans.
Basically the idea behind the 404 DME is that you can delete the sync between the EWS and the DME which means you can swap out the DME like you could do on the earlier e34's.
The 404 DME is also allegedly compatible in the S50B30 provided a chip swop is done from original 075 DME as per a Pelican Parts article. Both DMEs apparently run the same Motronic 3.3 system. Posting from my phone now but will update with link later. The article shows compatible DMEs and I even learnt that one of the Porsches has the same DME as the S50B30 but I suspect with a different chip.
I have a silver label 404 DME that I would like to have the EWS flashed off. Any idea who can do this. Sorry for thread jack. If not I am happy to part with it.