The monitor is just fine, for the price it performs just about how I would have expected. Displaylink over USB would never replace a standard monitor connection, but that's not what I'm using this for.
My main complaint is that the screen arrived without a base! It has a neck that should attached to a base, and an instruction manual showing the missing part, but it's nowhere in the box. Also, there is no way of contacting the seller to get this extra part sent out.