We have been slowly upgrading laptops at the office; we do use VPNs per device (software) to help “encrypt” out of date Wi-Fi adapters.
Should we upgrade network cards or dongles to a newer technology asap or does the regular WI-FI 6 routers have some kind of backwards security compatibility feature to sort of “beef up” the AC to AX and vice versa or do they just communicate via older standards period?
Would a Wi-Fi 6 VPN router help “upgrade” the connection in the same idea or would the AC Wi-Fi still just transmit AC to AX leaving it helpless and out of date?
If I can add another similar question about Bluetooth devices, when a older device (4.0) is connected/communicating to a newer device (5.1) does the encryption become as strong as the 5.1 standards or of does it use the older generation 4.0 leaving it out of date and pointless as well?