Lenovo ThinkPad P51 User Manual page 56

5 ac power connector: Connect the ac power adapter.
6 VGA connector: Connect the computer to a VGA-compatible video device, such as a VGA monitor.
ThinkPad Pro Dock
1 Power button: Press the power button to turn on or turn off the computer.
2
Key lock indicator: This indicator turns on when the system lock is in the locked position.
3
Docking status indicator: This indicator turns on when the computer is attached to the docking station
properly.
4 Eject button: Press the eject button to eject the computer from the docking station.
5
Adjuster: Use the adjuster as a guide to align the computer with the docking station.
6 Docking station connector: Connect the docking station to the computer.
7 System lock: Use the system lock to lock or unlock the eject button.
• When the system lock is in the locked position, the eject button is locked, and you cannot attach or
detach your computer.
• When the system lock is in the unlocked position, the eject button is unlocked, and you can attach or
detach your computer.
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P51 User Guide