Lenovo 40% of the market for Windows computers priced above $900 in the United States. The ThinkPad is a line of business oriented laptop computers known for their boxy black design, modeled after a traditional Japanese lunchbox. ThinkPads were originally an IBM product; they have been manufactured and sold by Lenovo since early 2005, following its acquisition of IBM's personal computer division. The ThinkPad has been used in space and is the only laptop certified for use on the International Space Station. The ThinkCentre is a line of business-oriented desktop computers which was introduced in 2003 by IBM and since has
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.