@Maurizio53 

Hello，

For your information, all the TP-Link powerline adapters are compatible with each other, while you buy the TL-PA8030P KIT as the starter kit, then the 7/8/9 series will be recommended.

You can refer to the case 2 of the instruction below:

https://community.tp-link.com/en/home/stories/detail/564

Here is a FAQ you can know more about how to choose a correct product:

https://www.tp-link.com/en/support/faq/2725/

While, please notice the difference of the socket sold in different countries/districts. And we do not provide an international warranty.

May it help and have a nice day.