VERY IMPORTANT UPDATE
At least on my actual issue with USB devices random disconnections, that i think is definitively gone!
And it would be a really nice birthday gift for me (yes, today is my birthday

)
So, after long time of searching, tests, and lost hours trying to solve the my USB issue with this board, I found randomly someone talking about the same issue, pointing to an unbelievable target to solve it.
For now is soon for me to say "it's over", but, now are 10 continuous hours of power on that i still have no disconnections and USBlogView empty after this action.
---> The cursed mouse pad <---
What was causing these disconnections was the really last thing that noone will go to point at, and it looks to be the Corsair MM800 RGB mouse pad.
Literally, after gathering informations, I decided to unplug that *fxxxing* mouse pad, and looks like the disconnections are totally gone, making actually my MSI X870E Godlike system nearly perfect, and with no issues.
I not really know why this mouse pad is causing it, guess is bound with an electrical factor, that bring all the same hub devices to reset for some seconds and restart.
(I actually never had any kind of problems bound to the DD III, it simply work from the first day with no problems, but i have to say also, that I never used MSI Dragon Center to interact with it, it is just stock, and running FW 2.0, not the latest 3.0)
---> False CPU & DDR error <---
So than, after that I found another unknown information, and knowing that I can run 4x24 sticks of RAM at 5600MT/s and 1,25v, I went so to the BIOS, and placed the required settings to achieve this again, because i just revert to the official 3600MT/s temporarily to try to point at the USB issue.
Anyway, after setting it up again, is happened what just happened time ago, that the system blocked himself, with a black screen, with no life, and a DDIII screen saying CPU & DDR error, that the last time forced me to reseat the CPU.
All this to just say, that was and is useless to reseat the components in these situations, because, i found out that, sometimes, on X870 AMD systems, the training of the DDR5 can take from 2 minutes to 15 minutes, and than, even with that DDIII boot error, pointing at hardware CPU & DDR, but without reporting anymore error codes (and so it looks like dead) I just waited, and magically, Windows started to boot up, keeping the DDIII in that error screen, until the next power off and power on, and all will normally work again, DDR5 4x24 (96GB) running at 5600MT/s, with the normal DDIII screen.
---> Conclusion <---
To be short, so, keep in mind to never really listen the errors screens of that Dashboard, specially in a new memory training session, is just required to wait, even if the Dashborard say there is an hardware problem, that is not true.
About the mouse pad, I not want to understand why it is acting like this, messing literally with all my USB devices, I will never connect it again, and maybe, I will also send it back to where it come from.
Maybe, and I really hope, now for me its time to finally enjoy this system and this board, after nearly a year of fighting issues.