Sony VGN-T140P VAIO User Manual page 112

Disconnecting a Port Replicator
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.
To disconnect a port replicator
1.
Close any active programs to prevent data loss, and disconnect the AC adapter.
2.
Lift the computer up and away from the port replicator.
Releasing the Com puter from a Port Replicator
Page 112