Microsoft Surface is a series of Windows-based personal computing devices consisting of tablet computers 2-in-1 detachables, and an interactive whiteboard known as the Surface Hub. The first generation devices under the Surface name were introduced on June 18, 2012, while the current generation models currently available are the Surface Pro 3 and the Surface 3, released on June 20, 2013 and May 5, 2015, respectively. The Surface Pro 4 and the Surface Book will be available for purchase on October 26, 2015.