@dunxd What I meant was whether I can get into one of the 2 ports a LAN from the router and from the second port to output a LAN to a PC (for example)

dunxd wrote @Eyal1990 that is exactly how they should be used! @dunxd can you please tell me if the same is true for WPA4220?

TL-PA9020 has 2 ports in each of the devices. Can I plug the router to one of the ports and then use the 3 (1 in the source and 2 in the target) ethernet ports as output? That meants for example:...