I bought this recently from eBay and then realised that it wasn’t what I wanted. The adapters need 2 Ethernet cables - which aren’t included with this listing - one to the router and another to the device once they are paired- if you are using a MAC laptop you will need a. Ethernet adapter. The best set up video that I found was on Amazon. TP-LINK AV600 Nano Powerline Adapters TL-PA4010KIT is a versatile solution for home networking and connectivity. allowing users to easily set up a powerline network for reliable internet.
eBay