Sony PCG-GRV680P Manual

Disconnecting a port replicator when the computer is in a power saving mode (Standby or Hibernate) or the battery power
is low may result in data loss or a computer malfunction. You can disconnect a port replicator when the computer is on or
off. 

  

 When the battery is low, turn off the computer before you disconnect a port replicator. 

1.

Close any active programs to prevent data loss. 

2.

Pull the release levers on each side of the port replicator to release the computer from the port replicator. 

3.

Lift the computer away from the port replicator.