Unable to use Serial console

[xaxero]

I have purchased an Deciso appliance with OPNSense pre installed. I have managed to get the serial console working where I can see the boot sequence but I do not have serial console access.
System -> Administration settings are:
Console    
Console driver    Use the virtual terminal driver (vt)
Primary Console    Serial Console
Secondary Console  Serial Console   
Serial Speed     115200
USB-based serial    Use USB-based serial ports
Console menu    Password protect the console menu

Am I missing something ?

[meyergru]

Disable "USB-based serial ports" and set primary console to EFI console.

From the OpnSense perspective, the serial console is not USB, only the client uses USB via the provided USB/serial converter.