thanks for your posting.
Your guess is right, - the PCB arrangement plus the fact that the MR-PRO is assumed to be operated with an XLR cable defined the orientation of the XLR connector.
What would be a use case where you would like to directly plug the MR-PRO into a device? Can you post a picture please?
I'll try to post one. One device I use is a XLR Balanced 'Tap' where you banana (Red, Black, Green) into the housing where a XLR-M and XLR-F live Normally I would plug this device directly into the MR XLR-M out, but I made a 6" XLR cable to resolve the small inconvenience.
With Pin 2 of XLR nearest screen (up), if you plug directly into another device this is a huge issue using cable not so much of course. I understand the MR is mainly a field device where it's usually cable fed. But if placed on desk it can be awkward.
I wonder what the logic was in doing this. I would guess it has to has to do with placement of the PCB relative to the display screen, attempting to keep it hand-size.
I'm thinking it can't be flipped neither???
Opinions and comments please.