Hi All 

I have Windows 8.1 Pro on Lenovo T440p and have docking station which is connected to 2 external screens, mouse, keyboard and etc... For some reason I can't find anywhere undock button to safely remove it from the docking station. Windows 7 hard this. 

Can anyone help me find it? 

Thank you in advance. 

• Moved by Yolanda ZhuMicrosoft contingent staff, Moderator Monday, February 16, 2015 5:42 AM

Hi Farukh,

Undock a Portable Computer
https://technet.microsoft.com/en-us/library/cc754084.aspx

According to the additional considerations:

Undock appears on the Shutdown Options menu only if the computer is Advanced Configuration and Power Interface (ACPI)-enabled and recognized as a portable computer in a docking station. If Undock does not appear on the Shutdown Options menu, your computer is not ACPI-enabled, or might not support undocking.

Some computers have an eject button on the docking station. Pressing the eject button instead of following this procedure also undocks the laptop. For more information, see the documentation provided with your docking station.

You may need to contact the Lenovo to confirm the machine supports undocking .

Best regards

• Edited by MeipoXu Monday, February 16, 2015 6:00 AM