Sony VGN-AX570G - Manual (Page 111)

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Using Peripheral Devices
Attaching Your Computer to the Multi Function Bay Docking Station
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When the computer has no battery inserted, do not attach the computer to the multi function bay docking station.
To attach your computer to the multi function bay 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 multi function bay docking station (4).