Works great with my ThinkPad X220 (with a Gefen DP->miniDP adapter) and my 2560x1440 display from MonoPrice. Plugged in dual-link DVI, USB and DisplayPort, enabled display, done. However, does not work so smoothly with my MacBook Pro (IVB 15" early '11). Plugged it in, get a quick flash of blue, then back to sleep immediately. MacOS' display preference panels are less than helpful. Admittedly I care more about it working with my ThinkPad than the MacBook Pro, but it should work on both.