Connecting the Laptop to the Docking Station
Here you will find information on how to set up and disconnect your laptop to the Docking Station.
If the Lenovo laptop is not connected to the docking station so it will not charge, open the document camera, project to the promethean board and extra monitor, and connect keyboard and mouse that are connected through the docking station. The slider on the left hand-side of the docking station must be on number 2 or all the way in to connect all the cables to the laptop. Here is a link to the video for your reference.