I have a Lenovo T410 running Windows 7 64bit. It has an Indel HD Graphics (Core i7).
I am using the laptop screen, a second monitor attached to the DVI out on the laptop and a third monitor attached to the plugable uga-k2-a.
I my monitor attached to the k2-a does not refresh all the time. If I move a window half way between two monitors I can see the window refresh( using the scroll bar or something like that) on the monitor not connected to the k2-a.