That's exactly what I thought, however during building one of those(see below 2 winx workers) last week I've experienced some really weird issues (don't remember if MB wouldn't POST or something) the warning was disabled on both and the only difference was that one had molex connected to the board and another one didn't, so I changed that... and the issue was gone.



P.S. Of course it could be a coincidence and I'm just being a superstitious ghm... whatever. but I'm not willing to spend time testing and disproving myself. so... as always the choice is yours:)