Sony PCG-R505GCK - Manual (Page 111)

Connecting the Docking Station
117
3 Follow steps 3 and 4 of “To disconnect the docking station when the
computer is off.”
To disconnect the docking station using the UNDOCK switch
1 Slide the UNDOCK switch forward.
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.”
Docking Indicator
UNDOCK Switch
Docking indicator
UNDOCK
switch