I own a Thinkpad T410, which also has a digital display port connector next to the analog VGA connection. Although my 26 "Asus Monitor (1900x1200 pixel resolution) also worked on the VGA port, but the picture was a little blurry and, for example, the font was displayed only blurred. This made me work for an extended period.
With this adapter, the problem is solved. The adapter is good and sturdy handles and offers me the opportunity to join my big screen with DisplayPort (HDMI cable from the adapter to the screen). The monitor screen is now much sharper - as it should be.