On Sat, 7 Mar 2020, James wrote: > https://github.com/aircrack-ng/rtl8812au/blob/v5.6.4.2/README.md > > USB Mode Switch > > > > 0: doesn't switch, 1: switch from usb2.0 to usb 3.0 2: switch from > > usb3.0 to usb 2.0 > > > > $ rmmod 88XXau > > $ modprobe 88XXau rtw_switch_usb_mode:int (0: no switch 1: switch from > > usb2 to usb3 2: switch from usb3 to usb2) Have you tried using this driver? Does it work? Maybe you can convince the authors of this 88XXau driver to merge it with the rtl88x2bu driver already in the standard kernel. That's what was managing your Realtek adapter in your earlier email. Alan Stern