You could daisy chain the switches together to form a physical stack of switches using their SFP+ uplink ports. But you couldt stack them in the traditional sense using their stacking ports nor add them as a stack in the dashboard.
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.