This is a file i use during audits to quickly enumerate my SQL servers from the auditors perspective.  Rather odd approach but once you have been through an audit .... methods and procedures will boggle your mind when it comes to asking IT for simple data points.  Either way this tool here pulls the version information live from the servers and proves that each linked server is actually connected to a datasource than can then be scrutinized to adhere to whatever regulation is being checked that day.