Connections are saved as a file that contains all of the information needed to connect to a Windows-based computer, including the options you had selected when the file was saved.
When you establish a connection, the options you selected become the default settings for all Remote Desktop connections. Default connection settings are saved in Users/username/Library/Preferences/Microsoft/RDC Client/RDC Default Settings.
You can customize any number of files, including files for connecting to the same Windows-based computer with different settings. For example, you can save a file that connects to MyServer in full screen mode and another file that connects to MyServer in 800×600 screen size.
By default, new connection settings files are saved in the current user's Documents folder.
Related topics
Save your connection settings to a file
Save your Windows user name and password