I have 102 MV cameras installed. They are all connected to non Meraki switches. Most are Brocade (Ruckus) POE switches, some are TP Link POE switches, and some are unmanaged Netgear POE switches. Never an issue with compatibility.
If you have non POE switches, you can use POE injectors as previously mentioned. Depending on your environment and budget, you may want to invest in POE switches.
Esteban J Nunez
School and Church