Sony PCG-R505DLP - Manual (Page 53)

Connecting the Docking Station
53
Disconnecting the docking station, using the UNDOCK switch
1 Slide the UNDOCK switch on the right side of your notebook toward the
front of the notebook. The Undock Complete pop-up window appears.
2 Release and remove your notebook. See “Disconnecting the docking station
when the notebook is off” for instructions.
UNDOCK switch
UNDOCK
Switch