There are alternative uses for these Nighthawks, no need to throw away, sell or box them up.
I have bought three XR700 and two XR500 (all low cost on eBay) that I’ve deployed in two houses.
In each house, an XR500 is installed and operate OpenWRT firmware, used as our router to the ISP. This hardware & firmware is excellent and extremely reliable, no crashes, no outages, and security is updated regularly by the org for OpenWrt.
The XR700s are reconfigured to be distributed Access Points (standard option within the native firmware) in the two houses, as they have extremely powerful WiFi radios that get the signals to the extremities of each house, and each XR700 allows us to have six LAN ports at these far corners of the houses for our device requirements. As AP’s these XR700 are extremely reliable and in 4 years I’ve had no unplanned outages with them, no failures, all attached devices always able to access the internet.
Obviously I have chosen not to utilise many DumaOS features, as I have my reasons….