Power Button - Dell E-Port Plus User Manual

5 Push the lock/unlock switch toward the back of the E-Port to unlock it.
The E-Port must be unlocked to dock a laptop.
NOTE:
You can dock your laptop regardless of whether it is turned on or off.
6 Center the laptop with the E-Port Plus, then push down on the laptop
until it clicks into place in the docking connector.
NOTICE:
Do not lift the laptop or the E-Port Plus when the laptop is docked. Doing
so can damage the connectors on the laptop and on the E-Port Plus.
7 If the laptop was not already turned on, turn it on by pressing the power
button on either the laptop or the E-Port Plus.
8 If the laptop does not turn on or awaken successfully, undock and reseat
the laptop.
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Using the Dell™ E-Port Plus