[user2722]

No need to slipstream. Just copy the drivers to install media (hopefully a writable media such as an USB pen) Latest Windows 11 has an option to select the folder with the drivers of it can't detect a WiFi device and there is no ethernet card.

That being said, I installed Windows 10 on Framework 12 by mistake and SHIFT+F10, "explorer", right-click on INF and "Install" also worked.

But on latest Windows 11 installer such witchery is not needed.