I would like to add another two adapters into my network as stated in my other thread and I already have this av600 kit https://www.tp-link.com/uk/home-networking/powerline/tl-wpa4220-kit/

and I use the smaller one to connect to the router and the larger one wherever I need it.

I recently bought a used https://www.tp-link.com/uk/home-networking/powerline/tl-pa411kit/ one from eBay for a bargain and I’m wondering how it will work and if they work together. As i already have a adapter plugged into the router will I need to plug one of these into the router I’m just gonna be using it for Ethernet connection. Thanks