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Overview
This guide will demonstrate how to install a graphics processing unit (GPU) within the Plugable TBT5-AI enclosure. The process is fairly straightforward, and typically can be completed in just a few minutes. If you have any questions about the process, prior to proceeding with the installation please contact Plugable support → support@plugable.com for additional guidance.
NOTE - We also have a video installation guide available here → LINK
Suggested materials
- Large, flat stable work surface
- Electrostatic discharge mat (suggested but not required)
- Philips screwdriver
Installation process
1. Completely remove the TBT5-AI from all of its external packaging. Please save all of the packaging materials for use in transporting the unit at a later date.
2. Manually extend the top-handle of the unit by pulling up on it with your fingers. Using the handle, place the TBT5-AI on a sturdy and smooth work surface.
NOTE - The use of an electrostatic discharge mat is suggested, however it is not required.

3. Examine the exterior of the enclosure for any signs of damage that may have occurred during the shipping process. If any damage is noted, please stop the installation process immediately and contact Plugable support for assistance → support@plugable.com
*** IMPORTANT NOTE - Please do NOT connect the power cable to the TBT5-AI at any point moving forward. There should be no external cable connections of any kind to the TBT5-AI while the GPU is being installed ***
4. Remove the large thumbscrew located on the top left corner of the front of TBT5-AI by turning it counterclockwise with your fingers.

5. Remove the thumbscrew located on the top right corner of the rear of the TBT5-AI by turning it counterclockwise with your fingers. You can also use a Phillips screwdriver to remove the screw, if necessary.

6. Using your fingers, use the small diagonal flap located just underneath where the rear thumbscrew was located to lift up the enclosure's top access door. The door should swing open approximately 90 degrees.


7. Using a Philips screwdriver, remove the two Philips screws located on the enclosure’s bottom access door. Keep the screws nearby as they will be used in a later step.

8. Using your fingers pull the bottom access door towards you until it lays horizontally, which will allow full access to the inside of the unit.

9. For reference, the TBT5-AI has one PCI Express x16 slot that provides four lanes of PCIe 4.0 bandwidth. The single PCI Express slot also has a small plastic retention clip. Prior to installing the GPU, ensure that the retention clip is open. When open, the clip will be angled slightly to the right as compared to the slot.

10. For reference, graphics processing units (GPUs) are available in variable widths. The unit of width measurement is typically the number of PCI Express slots that the GPU will occupy once installed. The TBT5-AI can accommodate GPUs up to 3.5 PCI Express slots in width.
Again for reference, the maximum GPU dimensions that are supported by the TBT5-AI are 346mm x 170mm x 77mm.
In order to install a GPU, the appropriate number of PCI Express slot covers must be removed from the TBT5-AI.
Using a Philips screwdriver, remove the Philips screws holding the PCI Express slot covers in place. Only remove the screws for the covers you wish to remove. The amount of covers removed will vary depending upon the width of your GPU.
Store the removed PCI Express slot covers with the product packaging for potential future use. Keep the screws nearby as they will be used in the next step.


11. Prior to removing your GPU from its packaging, please ensure you are seated at your work area and touch the metal surface of the TBT5-AI. This step is done in an effort to prevent electrostatic discharge. Then completely remove all packing materials from the GPU.
Gently insert your GPU into the TBT5-AI, taking care to ensure that the GPU is level both horizontally and vertically while you insert the GPU’s PCI Express connector into the PCI Express slot of the TBT5-AI system board.
NOTE - Do NOT attempt to force a GPU into the PCI Express slot. Doing so could result in damage to the TBT5-AI or the GPU.
When the GPU is fully seated, the PCI Express retention clip should snap into place and move to become level with the PCI Express slot. Ensure that the card is fully and evenly seated into the PCI Express slot.
Ensure that the GPU’s PCI Express metal retention bracket on the top edge of the GPU aligns with the empty PCI Express slot covers you removed previously, and that the bottom edge ‘feet’ are inserted into the slot receptacles at the bottom of the slot openings.
Once the GPU has been installed, use the Philips screws you removed from PCI Express slot covers to secure the GPU to the TBT5-AI.

12. For reference, the TBT5-AI includes a 850W ATX power supply that can supply up to 600W of power to a GPU. The included power supply has several different power connectors that can be used to power the GPU, specifically three 6+2 pin power connectors and one 12VHPWR power connector.
The four power connectors of the TBT5-AI power supply

The 12VHPWR 600W power connector of the TBT5-AI power supply (top view)

The 12VHPWR 600W power connector of the TBT5-AI power supply (side view)

One PCIe 6+2 power connector of the TBT5-AI power supply (top view)

One PCIe 6+2 power connector of the TBT5-AI power supply (side view)
The number and type of power connections required will vary depending on the specific model of GPU installed. Please consult the documentation provided by the manufacturer of your GPU for the specific type and number of power connections required.
Once the appropriate power connections have been determined, connect the required power connectors from the TBT5-AI’s power supply to your GPU.
NOTE - Please ensure that the power connectors are fully seated. Loose connections can cause problems.
ALSO NOTE - Depending on the GPU model, not all of the provided power connections may be required. If a specific power connection is not required, it is okay to leave the connector disconnected.
13. Once the GPU has been installed, please take a moment to double-check all of the connections:
A. Please ensure that the GPU is fully seated into the PCI Express slot, and that the PCI Express retention clip is secure
B. Please ensure that the screws holding the GPU into the PCI Express slot openings on the back of the TBT5-AI are secure.
C. Please ensure that all appropriate power connections to the GPU have been made, and that all of the connections are secure.
14. Once everything has been double-checked, please raise the enclosure’s lower access door. Optionally secure the door with the Philips screws you removed earlier.
15. Please close the enclosure’s upper access door. Secure the door with both the front and rear thumbscrews that you removed earlier.
Once the above steps are completed, the GPU is now fully installed.
If you need help
If you have any questions about this procedure or require any additional assistance, please reach out to Plugable directly via → support@plugable.com and we will be happy to help.
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