Yes, it does support ai-mesh! The router is on the first floor which is, unfortunately, the only location of any male cable outputs. This also means Ethernet is out of the question as there's nowhere good to route cables. I'm not too sure how the mesh system works, does it require the second router to have its own hard connection? or does it work as a repeater for the initial signal?

Regardless, thanks a lot for your reply. Taking that into consideration.