@GaryCamberley 

Hi,

Yes, this is possible.

Just log into the RE220, switch it from "Repeater" mode to "Access Point" mode and then connect the RE220 to the TL-PA4010P via Ethernet cable.

  @woozle Brilliant; thank you 

@woozle stumbled across this as I'm trying to do a similar thing to Gary.

I've connected everything up, switched to "access point mode", but it seems to be recognising the adapter as a client rather than as the network source if that makes sense?

Don't suppose you've got any idea how I can "reverse" the connection so the adapter is the source rather than the client? 

  @Bielsa96 

Hi,

Is your problem that the S21-Ultra can't connect to the Internet?

If it is, then verify the DHCP Server of the Wi-Fi extender in access point mode is not interferring with the DHCP Server of your main router. The DHCP Server of the Wi-Fi extender in access point mode should either be switched off manually or set to "Auto". The "Auto" option should switch the extender's DHCP Server off automatically if another DHCP Server is operating in the network.

By the way. What we normally call a Wi-Fi Access Point is more or less just a network switch that also includes Wi-Fi radios to provide wireless connections in addition to wired connections. Unlike a router, it does not route data between a WAN ("wide area network"), which in home networks is usually the connection to the Internet (call it "the source" if you wish) and a LAN ("local area network").