That means that the computer is connected to a UPnP enabled device, which allows the router to interface with Windows and open/close ports as an application desires...
If you enter properties you can see which ports are open and which programs have requested them.
You can hide that icon by clicking "Hide UPnP devices" on the task pane.
Window Manager is discontinued, for WLM try the new, Enhancer for contact list docking, auto-hide, hide taskbar button, remove button flashing and remember keyboard layout in conversation windows
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