System top cover becomes hot when used with USB 3.0 Dock - ThinkPad Helix (Type 3xxx)


The system top cover will become hot if the LCD is closed when external monitors, mouse, and keyboard are attached to the USB 3.0 Dock.

Affected Configurations

The above symptom is associated with, but not limited to, the following systems:

  • ThinkPad

Affected systems:

  • Helix (Type 3XXX)

System is configured with:

  • Systems that have a USB 3.0 Dock attached

Operating Systems

  • Microsoft Windows 7
  • Microsoft Windows 8

If the Helix (Type 3xxx) LCD is closed to allow for external display using the Lenovo USB 3.0 dock, the flap covering cooling fans should be left open to allow for adequate cooling.

Additional Information

Below is a picture of the flap open, on the top cover, to allow air circulation.

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  • Alias ID: SF13-T0102
  • Document ID: HT078788
  • Last Updated :02 Sep 2015
  • © 2015 Lenovo