Sony VAIO VGN-SZ300 Series User Manual page 78

Attaching Your Computer to the Docking Station
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When your computer has no battery pack installed, do not attach the computer to the docking station.
To attach your computer to the docking station
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To prevent loss of unsaved data, be sure to turn off your computer before attaching it to the docking station.
1 Disconnect all peripherals from the computer.
2 Plug the power cord (1) into the AC adapter (2) and an AC outlet.
3 Plug the cable attached to the AC adapter (2) into the DC IN port (3) on the docking station (4).
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Using Peripheral Devices