Add new nodes and compatibility

Yes, with the AC3000 (RBR50, which has 4x4 backhaul antennas supporting up to 1.7 Gbps) you can basically connect any other Satellite type:

- If you add an AC2200 Satellite (RBS20, RBS40, RBS40V or RBW30) you will limit your backhaul between the Router and that Satellite to 2x2 (867 Mbps).

- If you add an AC3000 Satellite (RBS50 or RBS50Y) then you will get the full 4x4 (1.7 Gbps) backhaul

All of the above Satellite types will give you 2x2 fronthaul antennas supporting up to 866 Mbps (5Ghz) + 400 Mbps (2.4GHz)

Please see this for more information: https://kb.netgear.com/000038220/Which-Orbi-WiFi-System-is-best-for-me

You can not add RBR## units to other systems as extenders. 

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drafferty wrote:

with the wifi AC3000 what other nodes can be added to it? can one mix-match other modules

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