You can certainly do this. You can use an MX as your router/gateway and connect your AP directly to it (either from a PoE port or with a PoE injector). You can then mesh other AP's from this one. I suggest looking into the advantages and disadvantages of meshing however as there is throughput and airtime impact to going down this route. https://documentation.meraki.com/MR/Wi-Fi_Basics_and_Best_Practices/Wireless_Mesh_Networking
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