The Netgear Nighthawk A8000 is a good option for retrofitting Wi-Fi 6E. It cuts a convincing figure in both mobile and stationary use.

... The stick can also be installed under Windows 10, but then it only works on 2.4 and 5 GHz - so it is only interesting for devices that still have Wi-Fi 5 or older ex works. A good solution: The installation programme suggests deactivating the existing WLAN module. This should definitely be done. The data rates achieved in the practical test correspond to those of Onboard Wi-Fi 6(E).