HP ProBook B series spring refresh which brings many new features to make it more user friendly; billing the ProBook 6455B as a “Smart Commuter” notebook. Essentially, HP is working to make our business lives on a notebook as easy as working on our home PCs. One of the bigger features with this new series is the new HP DuraFinish structure. Thia magnesium alloy structure was announced at CES 2010 and provides a sturdy base for the ProBook B series notebooks and adds to the overall durability and longevity of the notebook.