The current firmware only have WPA2-PSK[AES] + WPA-PSK [TKIP] as the nearest possible connection for legacy device. I have the printer that uses WPA-PSK [AES], the older TP-Link C7 AC1750 can use both

I saw the new release Deco X20 and given my AC1750 is old, I thought I give this new wifi devices a try and see if it help my streaming 4k video. I still getting wifi in my 1400sqf 2 stories house, li