Wait, the one I discussed above in my posts is not the same one as in those links.
Mine was on the front side of a frame rail running left to right between the diff and the muffler. Very easy to spot, labeled as I wrote in an above post.
I don't know which component 740is is looking for. And I can't speak to what the components are that Qsilver posted; those appear to be under the hood (I didn't recognize those location diagrams).
I *think* mine is an antennae and the others are actual RDC modules. But I am not sure by any means.

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2012 e70 X5 50i MSport "The Boss" black on black *Well Optioned*