Ultrabook is a specification and a brand trademark by Intel for a class of high-end subnotebooks are designed so that there are a lot of reduced without loss of battery life.
Ultrabook specification and brands are trademarked by Intel for a class of high-end subnotebooks that have been designed to have a lot of down without compromising battery life.
Ultrabook a specification and brand as a trademark by Intel for a class of high เอนด์ที่ subnotebooks designed to have a lot of reduced without loss of battery use.