Chances are you don't need an ac card. see https://www.freebsd.org/cgi/man.cgi?query=ath&apropos=0&sektion=4&manpath=FreeBSD+13.0-RELEASE+and+Ports&arch=defau

Chances are you don't need an ac card. see https://www.freebsd.org/cgi/man.cgi?query=ath&apropos=0&sektion=4&manpath=FreeBSD+13.0-RELEASE+and+Ports&arch=default&format=html https://www.freebsd.org/cgi/man.cgi?query=ath&apropos=0&sekt... Man you can get an atheros card off of ebay probably for less than $15 shipping included. If your OS does not support your card you could try using a card that is supported, a different OS, or a wired link. What I don't get is somebody complaining about wifi speed in 2021 when a replacement card is $15. Anyway only trying to be helpful. If you are doing almost anything over the internet there is no advantage of ac over abgn. The wifi lan is not the bottleneck. If you are doing something local that requires superfast data transfer then just run gigabit ethernet or whatever the the cool kids are doing these days.