Powerline Ethernet?
Powerline Ethernet?
You can definitely ask about how they function. It seems logical that each device has an Ethernet port for the signal, which could allow additional ports if you add more devices per unit. They likely operate as a proper mesh network rather than relying on range extenders that just copy Wi-Fi signals without real performance.
Mesh networks perform excellently; I've set up a few at my parents' home and business, and they function very well. I rely on Nest Wi-Fi for them, but everything operates similarly. They aren't like poor-range boosters.