Review on DisplayPort Thunderbolt Compatible ThinkPad SurfacePro by Doug Hinrichsen

Although you can use this adapter to connect a monitor to a 1900 x 1200 Mini Display Port, it will not display a higher resolution, which means you can't use this adapter with high resolution can use. 4k or most Apple monitors. I bought it to use with a Radeon HD6870 and a Dell U3011 monitor at 2560x1600. The best I could get to work was 1900x1200.