Sony PCG-FX410 - Manual (Page 45)

Connecting a Port Replicator
45
3 Lift the notebook away from the port replicator.
4 Close the port replicator connector cover on the bottom of your notebook.
Disengaging notebook from port replicator
Lifting notebook
Close the port replicator connector cover after removing your notebook
from the port replicator. If the cover is left open, dirt may get inside and
damage the notebook.
Lever