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 L series ThinkPad L series The ThinkPad L-series laptops from Lenovo were designed with the theme of "green". The first laptops in the series were described by Lenovo as being the environmentally friendliest products in the ThinkPad range. Key features that contributed to the eco-friendly tag were the use of recycled material for packaging and post-consumer recycled content (such as office water jugs and used IT equipment). The predecessor of the ThinkPad L series was the ThinkPad A series, conceived as a desktop replacement. The ThinkPad A series was discontinued in favor of two product lines, the ThinkPad R series and the