The HP Thunderbolt-2 PCIe 1-port I/O Card is compatible with the HP Z820, Z620, Z420, and Z230 Workstations.
 Requires a DisplayPort input to enable downstream DisplayPort devices on the Thunderbolt™ daisy chain.
 Thunderbolt is new technology. Thunderbolt cable and Thunderbolt devices (sold separately) must be compatible with Windows. To determine whether your device is Thunderbolt Certified for Windows, see http://thunderbolttechnology.net/products.