Here is a portable second display that lets you do more on your laptop. The DUO is easy to set up and provides 270 degree rotation. It can be used next to your main display or its back to let you become more productive and share your screen with others easily. To get started, simply place magnetic adhesives on your computer, attach the display, plug it in, and you are set.
You can rotate DUO back for the presentation mode. The display weighs 1.5lbs. This 12.5″ portable monitor should work with most laptops with a USB port.[where to find it]