HP's ProBook series has imposed itself a great deal to business users and put potential buyers in a difficult position, having to make their pick among many options. HP has invested a lot in this segment, and good results were consequential. The popularity of ProBook worldwide is noticeable, and new models seem to keep pouring in. HP ProBook 6540b is a strictly business machine which performs all given tasks without compromise. We will underline the price of this model at the very beginning, going around 900€, since this is, after all, the basic information needed to rate and give an opinion of any notebook model…