ThinkPad T series T420s, and the T520, have been lauded for their battery life – up to 30 hours with a 9-cell battery slice. ThinkPad T series The ThinkPad T series is a line of laptop computers introduced by IBM in 2000. After the transfer of the consumer computer division in 2005, they were developed and marketed by Chinese technology company Lenovo. IBM introduced the T series as part of their ThinkPad brand in 2000. The laptop was meant to cater to users working with multiple networks and in different environments. This resulted in the development of the IBM Embedded Security Subsystem. From
ThinkPad Tablet its side it has a full size USB port. According to Lenovo, eight major security vulnerabilities typical for tablet devices have been addressed in the ThinkPad Tablet. These are: According to Matt Kohut, the ThinkPad Tablet is the industry's first business-class Tablet because Lenovo is "the only vendor who can provide a full suite of services to make our customers more productive and secure." He substantiated this by discussing the warranty on the ThinkPad Tablet, ThinkPad Protection, custom 'images' and asset tags. The warranty on the ThinkPad Tablet was a standard one year which could be upgraded to three years.