Futurelooks takes a look at one of those convenient USB graphics adapters

At the end of the day, I only have one major opinion about this product: I like it! The DisplayLink USB-to-DVI adapter, which you can find under a number of different brands, is incredibly easy to use and provides for a very convenient way to expand your desktop workspace. It works particularly well with notebooks, because laptops typically do not come with more than one video output. If you look at many laptops with integrated graphics, the only available output is VGA and this can be terribly frustrating when the monitor you want is DVI only.

DisplayLink USB-to-DVI Graphics Adapter Review