What is Ultrabook Notebook ?

An Ultrabook is a technically higher-end type of a netbook based on new concept by intel.

Ultrabooks are designed to feature reduced size, less than 2.1 cm -0.82 inches- thick and weight usually less than 1.5 kg or 3.3 lbs without compromising performance and battery life. They use low-power Intel processors with integrated graphics and unibody chassis to fit larger batteries into smaller cases.

Some models have limited external ports (e.g. USB) due to their extremely thin profile.