ThinkPad past several years." Although Lenovo acquired the right to use the IBM brand name for five years after its acquisition of IBM's personal computer business, Lenovo only used it for three years. The majority of ThinkPad computers since the 2005 acquisition of the brand by Lenovo have been made in China. In addition to these Chinese manufacturing facilities, Lenovo employs 300 people at a combined manufacturing and distribution center near its American headquarters in Morrisville, North Carolina. Each device made in this facility "is packed in a box that sports a red-white-and-blue sticker proclaiming "Whitsett, North Carolina." In 2012, Lenovo
ThinkPad millionth unit of its ThinkPad line. Some Lenovo laptops (such as the X230, W530 and T430) block third-party batteries. Lenovo calls this feature "Battery Safeguard." It was first introduced on some models in May 2012. Laptops with this feature scan for security chips that only ThinkPad-branded batteries contain. Affected Thinkpads flash a message stating "Genuine Lenovo Battery Not Attached" when third-party batteries are used. The ThinkPad Yoga is an Ultrabook-class convertible device that functions as both a laptop and tablet computer. The Yoga gets its name from the consumer-oriented IdeaPad Yoga line of computers with the same form factor. The