KDE system manager for hardware, software, and workspaces.
System manager for global KDE platform settings
Customize and manage your desktop in one convenient location
Search function helps narrow down probable settings
Pointing at an icon displays a tooltip with more information about it
When the keyboard focus is in the icon window, you can type the first few letters of any module name to select it.
System Settings has a search function to help in hunting down a setting. Simply type in a keyword in the Search field in the toolbar and System Settings will display modules that contain the keyword and hide those that don't.
You can also search for and open System Settings modules in KRunner.