Sony PCG-FXA49 - Manual (Page 43)

Connecting a Port Replicator
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7 Turn on the notebook.
To remove your notebook from the port replicator
1 Turn off your notebook and the connected peripherals.
2 Pull the levers on each side of the port replicator to release the notebook
from the port replicator.
3 Lift the notebook away from the port replicator.
Power indicator
Releasing notebook from port replicator
Power
Release lever
Port replicator connector
Lever