This element allows you to browse the shared folder structure on the client machine. 

Selected file formats (images, PDFs, videos) can be displayed and opened. These are opened in a pop-up.

In the element settings you can define the start path, all underlying files and folders are navigable.
You can also set the refresh rate in seconds here, which determines how often the content is checked for changes.
A value of 0 deactivates the update and a value of 1-4 is set to the minimum value of 5, as a more frequent update can overload systems.