HP EliteBook 2540p and Lenovo ThinkPad X201 are both very popular in the market. at first glance, the outlooks of HP EliteBook 2540p and Lenovo ThinkPad X201 are similar to the previous generation laptops, but changes in the internal details are still a lot. For example, ThinkPad X201 added convenient touchpad, and HP 2540p is [...]