Instead integration?

The website suggests that Home Assistant has an Insteon integration, but after installing I do not find one. Is there a working Insteon integration for the 2413U PLM?

I’m assuming you’re looking at Configuration > Integrations? Not all integrations can be configured in the UI. Most require additions to configuration.yaml. The docs for that integration explain what to do.

So how do I get to a way to add configuration information. I read that this is in /config, but I cannot get there!

I cannot find a place in the UI, I cannot access it via secure shell (by any name, and I have the IP address. And I cannot log in via the console displayed with the monitory attached - my login to the browser UI doesn’t work. Where can I find this crucial information?

Assuming you installed via Hass.io:
https://www.home-assistant.io/getting-started/configuration/

Follow those steps to install the Configurator add-on to access configuration.yaml to add that integration.

@davidsbach did you get this working? I am the author of the insteon component and happy to help if needed.