HP Thunderbolt 3 Installation Manual page 5

4. Connect the GPIO cable to the connector on the upper-right corner of the card, and then connect the
other end of the cable to the system board connector labeled PD129.
NOTE: System board appearance might vary. See the System Board Overview located on the service
panel to determine the location of the header. If there are other PCIe cards installed, be sure to route
the GPIO cable underneath the cards.
5. The back of the card includes four connectors:
- (1)—Thunderbolt 3 ports (A and B)
- (2)—DisplayPorts (DP IN A and DP IN B)
Attach the Thunderbolt cables (sold separately) and DisplayPort cables to the back of the card.
HP Thunderbolt 3 PCIe Card Installation 5