ThinkPad X series the presence of a 12.1-inch Thin-film transistor (TFT LCD) display. These design values – thin and light – continued to be a part of the ThinkPad X-series laptops even after the purchase of IBM’s Personal Computing Division by Lenovo. The first X Series ThinkPad released by Lenovo was the X41 in 2005. The ThinkPad X-series laptops from Lenovo were described by Trusted Reviews as combining an ultraportable's weight and form factor with a durable design. The X-series laptops include traditional ultraportables, as well as convertible tablet designs. According to Lenovo, the ThinkPad X-series laptops include low power processors, offer long
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.