We are sorry things are not working as expected while using your Plugable TBT4-UDX1 docking station, and we would be happy to help.

In our experience helping others, we have found that most unexpected behavior can be resolved by checking the following items.  If the information provided below does not help resolve the issue, please reach out to us directly via support@plugable.com  and we will be happy to assist you further.

1. Please confirm that you are using only the 1.0 meter long 40Gbps Thunderbolt 4 cable that Plugable originally included in the box with the TBT4-UDX1 in order to connect the dock to your computer

The original Plugable Thunderbolt 4 cable has a small white cable 'flag' attached to it that lists the product model name on one side and the cable's specifications on the opposite side, and we have included inline below photos of both sides of the cable flag for your reference.          

We ask because other cables can sometimes cause problems.

2. Please confirm that the Plugable Thunderbolt 4 cable is connected to the single Thunderbolt 4 host connection port located on the front of the TBT4-UDX1 unit 

We ask because if the cable is connected to any other port within the docking station, then the docking station will not work as expected.          

We have included inline below a photo of the front of the dock with the Thunderbolt 4 host connection port highlighted in red, for your reference:

3. Please confirm that all of the power related connections are secure and that the TBT4-UDX1 unit is powering on

Under ideal conditions, when the TBT4-UDX1 is connected to a known-working electrical power outlet and powered on there will be a solid green power indicator light present on the front of the unit.

When the TBT4-UDX1 is connected to a compatible host computer, there will be a solid blue host connection light present on the front of the unit.

Also note, the TBT4-UDX1 is designed to power on automatically when connected to an electrical power outlet.  However, the device can be manually powered on and off via the power button located on the front of the unit. 

If the dock is connected to a power source and not powering on, please press the power button in an effort to manually power on the dock.

If the dock is not powered on (no green light present), please check the following:

A. That the included power adapter is securely connected to the dock’s power input port

B. That the power cable is securely connected to the power adapter

C. That the power cable is securely connected to the electrical power outlet

If the dock is powered on (green light present) but it is not being detected by the computer, please check the following:

A. That the Thunderbolt 4 cable is connected to the single Thunderbolt 4 host connection port on the front of the dock (see checklist item #2 for more information)

B. That the Thunderbolt 4 cable is securely connected to a Thunderbolt 4 port within the host computer.