The Dell D6000 Universal Dock Under-desk Mount is designed to mount your Dock under your desk. Simply mount one side, add the dock and mount the other side. Each corner of the mount will encompass the corner of the dock to ensure it does not slip out.
The mount is designed so that all connectors and LEDs are accessible/visible. It also allows an air gap so the dock does not rest directly against the bottom of the desk. This allows airflow to cool the dock. You can use drywall screws to mount it to your desk (not included).