How to disable auto-discovery-fortinet on FSR-112D-POE

[CPUSA]

Hello,

 By customer request, we have installed 7.2.8 on a FortiSwtich 424E-Fiber and a few FSR-112D-POE Rugged Switches. I did not factory reset when the software was updated.

We have no issue with using the following command on the 424E:

config switch interface
    edit "portx"
        set auto-discovery-fortilink disable

However, we can not issue this command on a FSR-112D-POE switch. Why? How can we disable "auto-discovery-fortinet"? The command is requesting a "integer" (3-300), not "enable/disable". I have read through countless documentation and now I am confused about this. One document says to disable "auto-isl", yet I have this option disabled per interface. Is this all I need to do?

Another document says that ports 9-11 are automatically set to "auto-discover-fortinet". Does this mean ONLY these ports? How can I disable this function then?

I am looking for a clear and concise answer and method to disable "auto-discovery-fortinet" for the FSR-112D-POE switches. Or are they already disable for ports 1-8? Can I disable ports 9-11? Would this be a global feature disable?  Please advise.

[CPUSA]

I believe I have a new brain cell. These switches are Access switches, reason why ports 9-11 are set to auto-discover. I am still "guessing" that ports 1-8 are not set or capable of setting for "auto-discover".