HP OmniBook 800 Notebook PC - Manual (Page 26)

Using the Docking System
Making Connections
1-26
3. Turn the docking system over. Insert a straightened paper clip or other thin
object into the security connector and press firmly while sliding a release latch
forward.
4. Continue holding the latch forward and insert the paper clip as shown below.
This holds the release levers forward, allowing for easier removal of the top
case.