Yesterday, Dell released their new Adamo XPS world’s thinnest laptop. And today PC World has posted images of various prototypes Dell played with before releasing the 0.4-inch thick Adamo XPS. According to Dell, their mission was to push the design envelope with a stylish leadership product.

The first machine prototype used Multitouch LCD panel and were designed to be hybrid all-in-one PC. Prototypes with multitouch LCD trackpad were also designed. Dell also developed a prototype that didn’t spread out the components as much as the final design. But the colorful prototype was ‘too thick’. One of the prototype used touch capacity technology all over the laptop like in keyboard and trackpad, and not just as touch-capacity strip to open the laptop as seen on the final product.

The final build as shown in the picture below splits the motherboard, and the components laid side by side instead of stacked, as is usually done in laptop design. This design approach resulted in the super-slim Adamo XPS.