Lenovo personal computer brand in China since 1997. In 2001, "Business Week" named him one of Asia's rising stars in business. Yang was president and CEO of Lenovo until 2004, when Lenovo closed its acquisition of IBM's PC division, after which Yang was succeeded as Lenovo CEO by IBM's Stephen M. Ward, Jr. Ward was succeeded by Bill Amelio on 20 December 2005. In February 2009, Yang replaced Amelio as CEO and has served in that capacity ever since. Yang was chairman of Lenovo's board from 2004 to 2008, and returned as chairman in 2012 alongside his role as CEO. In
ThinkPad W series are: The Lenovo W541 is essentially a ThinkPad W540 that featured the new-style keyboard but with a re-introduction of the classic ThinkPad trackpad design. The prior ThinkPad trackpad design featured in the W540 was abandoned. Rather than being a successor of any previous W-series model, the Lenovo W550s is a thinner Ultrabook variant of the W series. While a capable Ultrabook, when compared to the W541 and its predecessors, it offers less capability with only dual-core hyper-threaded Intel Broadwell Processors vs. the true quad-core processors of other models and has only two RAM slots. The ThinkPad W series was replaced