I have a Comcast gateway that was providing both ethernet (to computers and printer) and wifi (to laptops, smart plugs, etc.).
I plugged the first P9 into the gateway, and turned off the gateway's wifi.
1) Should I leave my existing ethernet network plugged into the gateway, or should it be plugged into the second port on the first P9?
2) Should I also plug the second and third P9 modules into my ethernet network, or would that just confuse them?