but you can look up the chipset in the ToH and search it for a "premium brand" device with the same chipset - as this is the relevant thing for WPA3 support.
I use a raspberry 3 .. works fine with a 100 mbit uplink.
(theoretically you can have any usb network device there is a driver for.)
so an wlan usb dongle with sma connector and a good antenna should be an option if the onboard wifi lacks..
pi and powerbrick + an ax88179 usb network (I use cable utill the exit node) card set me back 60 bucks..
mine runs very stable (OpenWrt 21.02.3 r16554-1d4dea6d4f / LuCI openwrt-21.02 branch git-22.167.28411-ee8170b)
Xiaomi Redmi Router AC2100 works just fine. But not every client has support for WPA3. Be aware of that.
WPA3 only mode breaks many clients that only support WPA2, like most smart TVs and even laptops with intel older wireless NIC 8265 or 7260...
Even WPA2/WPA3 mixed mode can make some clients fail to connect, tried myself.
Besides, no obvious gain to switch to WPA3 atm as WPA2 is robust enough IMO.
Another thing is WPA3 tends to have lower throughput even with same handshaking speed shown. Just google to see answer. U really need it now?
Thank you very very much for your feedbacks!!