RBK-852 with Comcast 1200GB Internet

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Ely wrote:

So I had to connect the Orbi to the 2.5GB Ethernet and them my PC normally to one of the Orbi ports. that also works, but then I do't get anything above 940Mbps in the speed tests.

 

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This is correct.  The modem and Orbi both have 2.5G ethernet ports, which means the modem can deliver 2.5G to the Orbi.  Because the Orbi has only gigabit LAN ports, the maximum speed that can be achieved  on any device connected to the Orbi is 1GM. (In practical terms, it is impossible to achieve 1GB. 940MB sounds about right.  So what happens to the other 400mb?  It is available to other devices connected to the Orbi, either via ethernet or WiFi.

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Ely wrote:

HWill the Orbi be able to get a connection If I purchase a 10GB Switch and then connect that swith to the modem's 2.5GB port then connect the Orbi and PC to its ethernet ports?

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Never. The modem can connect to only one device.  It can associate the public IP address with only one ethernet MAC address.  The WAN (yellow) Orbi port must be connected directly to the modem.

Perhaps there is a WiFi router out there somewhere that has both 2.5GB WAN port and 2.5G LAN port, but it is certainly not the Orbi.