For actuals gl devices i would buy AC1200 wifi cards r usb sticks, par example:
External USB:
- par exampel the https://www.edimax.com/edimax/mw/cufiles/files/download/datasheet/EW-7822ULC_Datasheet_English.pdf or other one which support AC1200 it can be you will find on internet from 5 to 35USD
Internal notebook card:
- The last offical Intel HMW form factor wifi card: Intel 7260HMW AC (not N or AN in the name) will cost about 10 to 20 USD
- or for newer notebooks with NGW slot, a minimum AC 1200 wifi card with NGW slot will cost about 10 to 20 USD