What is the Output Button in the Server Connection Properties?

[brad]

You should be able to find your answer here:

Server Connect Actions output data explained

Dear Marzio, the first one (the chain) make you this step a file on its own. For example: connection to a database, you must click on the chain image then the file with connection details will not be only inside the script you are doing but it will be a file on its own and will be available for all other serverconnect scripts. Or if you have a query that you must repeat inside different server connect script, you can click on the link (chain) button and it will be available for all the scripts…

Hope that helps.