DisplayLink is licensing technology that promises to make adding a second (or sixth) monitor as easy as plugging into a spare USB port. Samsung’s 940UX 19“ LCD (Under $350, review) is among the first to employ it, though IOGEAR’s USB to VGA adapter is also available (about $65, review). This isn’t without problems, though. Image quality is said to be sharp until it moves, then it stutters and chops, more from CNet Labs. Still, might be useful for low-motion office-type applications.