Sony PCG-R505DC - Manual (Page 103)

3. Follow steps 3 and 4 of To disconnect the docking station when the computer is off .
Using the UNDOCK switch
1. Slide the UNDOCK switch forward. The Undock Complete pop-up window appears.
UNDOCK switch
2. Wait for the docking indicator to switch off before undocking the computer.
3. Follow steps 3 and 4 of To disconnect the docking station when the computer is off.
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