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Article Number: 000126545

Latitude 7280 and 7480 peripherals connected to WD15 dock do not work during POST

Summary: Latest BIOS version download to resolve functionality issue.

This article may have been automatically translated. If you have any feedback regarding its quality, please let us know using the form at the bottom of this page.

Article Content

Symptoms

Issue

You may find that your mouse and keyboard will not work on Dell BIOS splash screens when trying to access BIOS with F2, or the One time boot menu with F12, or enter any input in preboot environments like BIOS, boot menu or BIOS/HDD password splash screens
 

Solution

This solution assumes that in the system BIOS under System Configuration > USB Configuration the following are both enabled:

  • Enable Thunderbolt Boot Support
  • Enable Thunderbolt (and PCIE behind TBT) Preboot

 

A BIOS update was released to resolve the issue and we recommend that you update to the BIOS version 1.2.9 or later from the Dell Driver and Downloads site.

 

If the above solution does not work, then please contact Technical Support

 

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Article Properties

Affected Product

Dell Dock WD15, Latitude 7280, Latitude 7480

Last Published Date

10 Apr 2021

Version

3

Article Type

Solution

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