I never saw the use for that power connector in the old manual. I assumed it was to supply power over the USB-C for 60w charging or something.Board showed up about 3PM, but I didn't get a chance to put it all back together until this morning.w The Plus motherboard is apparently the same except for Intel AX411 wifi instead of AX211--they slipped an errata page into the manual.
I'm using it now, and it seems to be working fine. I read the mobo manual a bit more closely this time and realized that what looked like a fan header on the M.2 daughterboard is actually a power connector, which needs to be fed from Molex (ugh).
No WHEA errors so far, and the video card's in PCIe 4.0 mode!
Also, I didn't know there is an AX-411!! That's cool!