Fortigate 200f

Hi Franklin1791,

You can set up SPAN (Port Mirroring) using ports associated to underlying switch chip/driver.

Please refer to the below document for more information:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-SPAN-Port-Mirroring-using-ports-associated-to/ta-p/191137

Additionally, you can refer to how to add a physical interface from Hardware/Software switch.

https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-add-or-remove-physical-interface-from/ta-p/190563

If you have found a solution, please like and accept it to make it easily accessible to others.

Regards,
Aman