Using a non-standard port using ODBC Driver 11 for SQL Server

Connection string

This Microsoft ODBC Driver 11 for SQL Server connection string can be used for connections to SQL Server 2014, SQL Server 2012, SQL Server 2008 and SQL Server 2005.

If your SQL Server listens on a non-default port you can specify that using the servername,xxxx syntax (note the comma, it's not a colon).

Driver={ODBC Driver 11 for SQL Server};Server=myServerName,myPortNumber;

The default SQL Server port is 1433 and there is no need to specify that in the connection string.