I have a Lenovo ThinkPad T420 and dock with two DVI and VGA output, which runs my three Dell U2412 monitors just fine. The U2412 supports DP, DVI, and VGA.
But now that I want to upgrade to a T450 with Win7P, Lenovo is telling me that none of their docks support three monitors, and that the only way to run three monitors is to go to a W541Thinkpad with their 170W dock. There are several disadvantages to going with the W541, so my question is this: Is there some type of adapter I can connect to a DVI or DP port on a basic T450 dock that will give me 1600 x 900 output for three monitors? Note that I "extend" them as though they were one wide monitor. TIA