Yes, the system can be expanded with additional AmpliFi Meshpoints or AmpliFi Routers. If you add an additional AmpliFi router, it becomes a meshpoint. You can even use a LAN cable to ensure communication between the main router and the additional AmpliFi router in mesh mode, keyword: Wired Backhaul. For more information, visit
https://help.amplifi.com/hc....
One thing to bear in mind, however, is that the Meshpoints in this set are permanently coupled to the router by the software and cannot be used with another AmpliFi router.