Apple only!!!! Thunderbolt was created for Apple by Intel and is licensed as such. You will not find the connection type on anything except Apple devices and products designed to work with them.
Apple, in reality, doesn't create anything but does design them. I would say that sometime in the near future, Thunderbolt will be released for use on other devices. I have it on my Mac Mini and am thinking of getting that way overpriced monitor for it.
The interface works perfect and can't blame anybody for wanting it. You can daisy chain off of it and can replace every connector on a computer - including video.
Apple has always found a way to freeload off of others and have been able to charge for it at a high price.
James - Lenovo and Acer have had Thunderbolt equipped laptops since 2012, it is owned by Intel, Apple helped develop it and gets a free or reduced license fee. Intel charges the other OEMs to use it, much like USB 1.1, 2.0 and 3.0 (all owned by Intel as
well).
All we know about the Data Bus in the Power Connector is that it is there and used by the Dock and MS has conformed it is not Thunderbolt.
If I were a betting man I would say it a USB 3.0/DisplyPort Pass Through for the dock.