Most port replicators will have a lock that needs to be unlocked before you can undock.
1. Unlock as per picture below

2. Then pull the lever and gently remove the computer from the port replicator.

Please note: The position of the lock and the lever may vary between docking stations.
Featured
Toshiba dynadock® U3.0 Universal USB 3.0 Docking Station.
Connect to all your computer accessories and storage with one USB cable quickly and easily!
Learn more
FAQ
FAQ