What can I say?
This is an original 1951 NG supply, and certain features of later versions are not yet present.
However, these early NGs had superior filtering through a heavy-duty choke (you may have noticed the weight of the unit), and otherwise perform well with U47/48 mics from any era.
The only thing that visually bothers me is not the added XLR (not an easy thing to put a smaller chassis-mount connector in hole designed for the much larger 3-pin Tuchel audio connector), but the upside-down mounted mic connector: The connector "key" should be at 12:00.
I know, the XLR replacement is not esthetically pleasing. On these units, I prefer leaving the audio Tuchel in place and mounting an XLR to the side, similar to how Neumann did it on NU67u power supplies (those meant for non-Tuchel countries, i.e. forthe U.S.).