@SteffenR
Lots of people say many things many times. Does make them true.
Like @guyburns noted, we have not had significant problems with usb memory sticks on PCS,
but have had a lot of problems with the Qu.
Why they have hardware , or more likely driver issues, with the Qu is unknown.
Better documentation would have helped.
But it is misleading which is why I first got the biggest fastest usb3s that I could.
What it really likes is smallish usb2 memory sticks.
I know no other product with a user generated database of memory sticks that might work listed.
So this seems like an AH faux pas, which should not have happened, no matter how well the rest of the device works.