Dell Dock Cannot Use Lan Port or Update Dock Firmware

Summary: Dell Dual Charge Dock HD22Q, Dell Dock WD19, and Dell Thunderbolt Dock - WD22TB4 cannot use LAN port and Dell Firmware Utility (DFU) cannot upgrade the dock. This occurs after disabling the Enabled External USB Port or enable Type-C dock LAN in the BIOS. ...

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Symptoms

Dock cannot use LAN port as normal and Dell Firmware utility (DFU) cannot upgrade Dock Firmware.
Warning no Dell Dock attached 

Affected Docks:

  • Dell Dual Charge Dock HD22Q
  • Dell Dock WD19
  •  Dell Thunderbolt Dock – WD22TB4

Affected Platforms:

  • Dell Pro 14 Plus PB14250
  • Dell Pro 16 Plus PB16250
  • Dell Pro 13 Premium PA13250
  • Dell Pro 14 Premium PA14250
  • XPS 13 9350

Cause

The USB2 link is disabled when disabling Enable External USB Port causes this issue. When disabling the enabled external USB port and enable Type-C dock LAN in the BIOS setup menu the docks cannot use the LAN and DFU cannot upgrade dock firmware.

Resolution

This can be resolved by enabling Enable External USB Port in the BIOS Setup menu. When the computer cannot detect dock LAN and must update dock firmware using the DFU.
enabling Enable External USB Port in BIOS 

Affected Products

Dell Dual Charge Dock HD22Q, Dell Pro 13 Premium PA13250, Dell Pro 14 Premium PA14250, Dell Pro 14 Plus PB14250, Dell Pro 16 Plus PB16250, Dell Dock WD19, Dell Thunderbolt Dock – WD22TB4, XPS 13 9350
Article Properties
Article Number: 000289260
Article Type: Solution
Last Modified: 24 Apr 2025
Version:  3
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