I'm looking to replace my Intel 2230 card because it seems to have connectivity issues in my laptop. I've been looking for a new card but can't seem to figure out whether to buy a "AC-type network card". They all seem priced fairly but if I don't have an AC router and I connect to public (campus) wifi so I don't really understand if they are backwards/forwards compatible. Thanks
Laptop: Lenovo U410. Any miniPCIe network card suggestions would be helpful too.