The only way you can tell if the equipment is claimed is if you try to register it into dashboard. If you plug the serial number in as has been suggested by others, you will quickly find out if the unit can be used. After you have claimed the unit all you need to do is unclaim it from your dashboard and then you can continue on with your plans. Take a look at this KB. Adding and Removing Devices from Dashboard Networks - Cisco Meraki
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