designer's own words:Most people use laptop for internet, some people have lots of computer with different size. Sometimes we have too many product which have the same function. If we can change the weight & function of laptop. we may have a better life and less waste. "PLUS" is a notebook you can easy to add the function with the device brick no matter it is mini projector or extra battery . You can choose the brick according to your using habits. The function brick of "PLUS" is easy to take apart and make up. For that reason you can change your laptop function and color everyday and it depends on your needed. Just like the toy brick use the favorite to build what we love.