High performance on display.
Thunderbolt I/O technology provides native support for the Apple Thunderbolt Display and Mini DisplayPort displays. It also supports DisplayPort, DVI, HDMI, and VGA displays through the use of existing adapters. So you can connect your Apple LED Cinema Display or other display, along with multiple high-speed devices, all from a single port.
Going by Apple.com flaunting "backwards compatability with mini displayport" and the word of an apple specialist; I bought a 27" Thunderbolt Display.
Apparently it doesn't work with my AMD-based Windows. Do I have to send it back?
Have you try with Amazon yet? They have great return policy and pretty quick with the refund.