Does Elgato Thunderbolt™ 3 Dock need a separate power adapter? Yes, Elgato Thunderbolt™ 3 Dock is powered by a separate power adapter, which is included in the box.1x Power Input (DC 20V 8.5A) Related articles Does Elgato Thunderbolt™ 3 Dock come with a Thunderbolt™ cable? Can I use Elgato Thunderbolt™ 3 Dock to charge my PC laptop? Which cable can I use to connect Elgato Thunderbolt™ 3 Dock to my computer? How do I install the Thunderbolt™ 3 Dock Utility? What should I do if Elgato Thunderbolt™ 3 Dock won't make an Ethernet connection?