HP ProBook 4525s - Notebook PC - Using the Docking Connector (Select Models Only)

Using the docking connector (select models only)
The docking connector connects the computer to an optional docking device. An optional docking device
provides additional ports and connectors that can be used with the computer.
NOTE: The following image may look slightly different than your computer or docking device.
44 Chapter 5 External cards and devices