Hi Egon, I'm John, a fellow Microsoft user like you.
I understand you're looking for a way to enable Wi-Fi 6 on your Windows 10 PC, and I'm here to help.
If you've already checked that your router and Wi-Fi adapter in Device Manager support Wi-Fi 6, then it should be using 802.11ax. Or, are you referring to the Wi-Fi name showing "5G", for example HUAWEI-5G-XXXX?
If so, please know that Wi-Fi 6 is technically 802.11ax, and it operates on both the 2.4 GHz and 5 GHz frequencies.
I understand the confusion, and I hope this information is helpful.
If you'd like to clarify things or this isn't quite what you're looking for, please provide more details by clicking "Reply" below
John J.D.