Sony VAIO VGN-A700 Series User Manual page 76

Disconnecting Your Computer from the Port Replicator
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To prevent loss of unsaved data, be sure to turn off your computer before disconnecting it from the port replicator.
To disconnect your computer from the port replicator
VGN-A700 Series models
1 Turn off the computer and the connected peripherals.
2 Slide the lock switch to UNLOCK.
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76
Using Peripheral Devices