Can I use a mesh network to provide wired interent?

I got my configuration up and running.

T-Mobile Home Internet in the barn, with ethernet cable going to RBR, which is placed in front of a single pane window.

RBS in line of sight of RBR, about 70 feet away, in front of a dual-pane window.

Additional RBS on other side of house.

No wired backhaul.

Backhaul status for 2nd satellite listed as poor, but still seems to have good connectivity.

I have connected the 1st RBS to my wired network in the house, which goes to a netgear switch (GS316).

Attached to the netgear switch is a AC1000 wifi router that devices in my basement use. Not important, I just wanted to point out that the RBS did handle connecting to my switch and the ability for other routers/access points to use (which I confirmed with Netgear support).

However, speed tests when connected to the AC1000 were low (20 MB/s), so that would not be a viable method for everyday use. It works for me because the devices down there (water leak detector, energy monitor) are low bandwidth.

I connected a single device (laptop) to the 2nd satellite via ethernet and did not see the same speed reduction, the speed seemed appropriate for the backhaul status being reported (around 100 MB/s).

It appears that the wifi of the Orbi is much better than that provided by the T-Mobile Home Network device. When measured back to back I got 125 MB/s from the T-Mobile wifi, and 140 from the Orbi wifi.

Once I had the Orbi I was able to relocate the T-Mobile device to a better location, and I now get results in the 160-200 MB/s for my network (from an iMac located in the same room as the 1st satellite.

Summary: You can connect a satellite to a switch and it will handle multiple connections, but the speed through a router connected to that wired network does not come close to the speed of a direct connection (I only saw about 5 MB/s). 

Very happy with my purchase (RBK753), before the rest of the house had very limited bandwidth (could not see the T-Mobile internet device), and now I have excellent bandwidth in the entire house.

Thanks for all the help! Much appreciated.