On the top of the window you will see a drop down box where you can select IOSlaves that are installed on your system. IOSlaves are how KDE applications “talk” to other computers, other applications, or act on files.

Selecting an IOSlave name from drop down box will display some help information about that IOSlave, such as how to use it, and what it does.

The protocols module is purely informational, you cannot change any settings here.