Lenovo that tracks the progress of these integrations. Lenovo has an annual meeting where the management of newly acquired companies meets with its top 100 executives. In these meetings, held in English, Lenovo explains its global strategy and how new executives fit into its plans. Lenovo acquired IBM's personal computer business in 2005, including the ThinkPad laptop and tablet lines. Lenovo's acquisition of IBM's personal computer division accelerated access to foreign markets while improving both Lenovo's branding and technology. Lenovo paid US$1.25 billion for IBM's computer business and assumed an additional US$500 million of IBM's debt. This acquisition made Lenovo the
ThinkPad X series Windows 7 Enterprise. The specifications<ref name="Notebook Review - Lenovo ThinkPad X201/X201s Review"></ref> of the X201 are given below: The specifications of the X201s are given below: The X201 tablet, released in 2010, was criticized by Engadget for its lack of durability, protruding battery, and thick body, while praised for its performance. Notebook Review had similar views about the X201 tablet in terms of both performance and battery life while indicating that the display was superior to that of the X201 or X201s. The ThinkPad X-series laptops released in 2011 by Lenovo were the X120e, X220, X220i, X220 tablet and X1.