Announcing availability of OrbiOS 2.1

No, you can attach multiple Orbi over Ethernet.  See attached for supported topologies:  

https://kb.netgear.com/000051205/What-is-Ethernet-backhaul-and-how-do-I-set-it-up-on-my-Orbi-WiFi-System

I have an Orbi Router and 2 Orbi Satellites. You can connect either one or both satellites direct to the router (or through gigabit switch) for wired backhaul. I'm currently using one wired backhaul through my switch and one without (over 5G). It's working great and the "Attached Devices" section shows this. One advantage of the wired backhaul is it now allows you to use the satellite as a wired gigabit switch to devices connected directly to it. Without the wired backhaul you would be using wireless bandwith for your wired devices to the satellite. Unlike others on this thread, I see no loss in speed over wifi and I get the full 866Mbps over 5G wireless through the wired backhaul satellite. I have no connection/disconnect issues. It's dreamy. Heck, even with the firmware update it maintained my seperate 2.4G and 5G wireless networks. I won't be totally happy until Netgear allows us to use the wireless 5G backhaul channels to connect to clients. Then we would see some true performance improvements.