The experiences reported here have got me thinking. When I had that corrupted external NVME drive which was causing keyboard and mouse freezes, at first I was using the front panel USB C and USB A ports with it. I tried both as I had an adapter cable for both port types. The freezes didn't happen every time, but maybe 50% of the time when I plugged it in.
Then I started using a brand new external USB3.2 Gen 2 USB hub. That's when I worked out that the drive was corrupted. I reformatted and have been using the external hub without problems since (apart from another external HD that failed the other day, lol. However, I'm sure that really was just a genuine drive failure).
Anyway, perhaps those front ports caused the corruption of that external NVME drive in the first place? Mind you, I did try the external USB hub as well in the early days and got freezes then as well when I think back. The stories here seem to indicate that something is a problem. Maybe Win 11, maybe drivers or hardware, but something is going on.
Strange thing is that for about three months now, I've had no more problems with that external NVME drive. I have been using just the USB hub, not the front ports. Too many variables to diagnose it again now, but there is a mysterious issue going on that is affecting a number of us here...
There is another factor as well. When I had these problems, I made a note that changing power management options for my USB root hubs in Device Manager seemed to make things better. I didn't make a note of the exact settings, but at least this is a clue. It's a bit like allowing maximum PCIe power savings in Windows which can cause WHEA errors - at least on my machine. Maybe this little extra bit of info might help us to track down the root cause. Perhaps we can work this mess out together?
Maybe it's as simple as being related to the Device Manager power options for root USB hubs. I've just had a look and strangely, the power management options for both of my USB root hubs are set to "allow Windows to save power on this device". I expected to see that I had turned that option off, but like I said, everything has been stable for a good while now, at least with using my external USB hub. I might try the front ports again tomorrow and see what happens.
Final comment - I have a 690 board, but the problems are happening on 790 boards as well. So I guess that eliminates the chipsets (probably).
Z690 Hero, BIOS 3401, MEI 2345.5.3.0, ME Firmware 16.1.30.2361, 7000X Case, RM1000x PSU, i9 12900K, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.