Look for the RDP6 folder, located at C:\Users\Username\RDP6

Then run "ConnectLauncher.exe" with administrator rights, and select the connect file you want to read.

You will get this menu:

Use "Edit file". You will first get the descriptive info of how it works: 

Click on OK,

Now you get all the settings contained in the connect file:

You can also directly use this file in attachement: ConnectLauncher.exe