Table 17. Symptoms and solutions (continued)
Symptoms Suggested solutions
• First power off the docking station by disconnecting the Type-
C cable and then removing the power adapter from the dock.
Then, power on the docking station by connecting the power
adapter to the dock before connecting the Type-C cable to
your system.
8. Cable LED is not ON after it is connected to your host. • Ensure the WD19TB is connected to AC power.
• Ensure that the system is connected with the docking station.
Try to disconnect and re-connect again with the docking
station.
9. USB port has no function in a pre-OS environment. • If your BIOS has an Thunderbolt Configuration page, ensure
that the following options are checked:
• 1. Enable USB Boot Support
• 2. Enable External USB Port
• 3. Enable Thunderbolt Boot Support
10. PXE boot on dock does not function. • If your BIOS has an integrated NIC page, select Enabled w/
PXE.
• If your BIOS Setup on your system has an Thunderbolt
Configuration page, ensure that the following options are
checked:
• 1. Enable USB Boot Support
• 2. Enable Thunderbolt Boot Support
11. USB Boot does not function. • If your BIOS has an Thunderbolt Configuration page, ensure
that the following options are checked:
• 1. Enable USB Boot Support
• 2. Enable External USB Port
• 3. Enable Thunderbolt Boot Support
12. AC Adapter is displayed as “Not Installed” in the Battery
Information page of the Dell BIOS Setup when the Thunderbolt 3
Type-C cable is connected.
• 1. Ensure the Dell Thunderbolt Docking Station WD19TB is
connected properly to its own adapter (130 W or 180 W).
• 2. Ensure the cable LED of your docking station is ON.
• 3. Disconnect and re-connect the Thunderbolt 3 (Type-C)
cable to your system.
13. Peripherals connected to the docking station do not work in a
pre-OS environment.
• Thunderbolt Boot Support is by default that is disabled in BIOS
Setup on your Dell system. With such default setting the
docking station and the peripherals that are connected to the
docking station do not work in a pre-OS environment.
• If the BIOS Setup on your system has an Thunderbolt
Configuration page, check the following options to enable
docking station function in a pre-OS environment:
• Enable External USB Port
• Enable Thunderbolt Boot Support
14. Alert message “You have attached an undersized power
adapter to your system” is displayed when the docking station is
connected to your system.
• Ensure that the docking station is connected properly to its
own power adapter. Computer requiring more than 130 W
power input must also be connected to their own power
adapter for charging and operating at full performance.
• First power off the docking station by disconnecting the Type-
C cable and then removing power adapter from the dock.
Then, power on the docking station by connecting the power
adapter to the dock before connecting the Type-C cable to
your system.
Troubleshooting the Dell Thunderbolt Docking Station WD19TB 39
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