The present product was purchased to expand the internet network to another floor. I connected it with the existing TP-LINK TL-PA4010P KIT v4 kit, which connected directly and seamlessly!
Despite the age of the house, which is from the 90s, the speeds are stable, without any disconnections or losses.

All TP-Link devices from the TL-PA4...P and TL-PA7...P series can be connected to each other WITHOUT ANY ISSUE, just remember that the speed of the lowest device will always be supported (meaning, for the TL-PA4...P series, the limit is 600Mbps, so even if you use devices from the 7 series that reach up to 1Gbps, if there is at least one device from the 4 series, you will reach up to 600Mbps)

It was installed and connected as a third powerline to an existing connection of two previous (and older by 2 years) TL-PA7010 KITs. Within 1 minute, after testing their buttons, it connected properly (the instructions, although very simple, confused me as I remember it happened with the KIT the first time). I never had to intervene again, not even after a power outage in the house. Everything has been installed in the electrical network of an apartment.