Obviously, it is very versatile ... But the voltage selection is not really automatic: when you choose a take, the fact of connecting to the charger rule "automatically" the output voltage. In my case, the charger was well designed to deliver the power I needed, but not with the connector on my ultra-portable. Whoever voltage corresponded not within the PC connector. So beware, much less universal than expected! Other retail frustrating: It makes sense to display the output voltage ... In fact, it does not display the voltage measured at the exit, but an immutable figure is the theoretical voltage chosen with taking !!! It would be better that this charger is equipped with a conventional voltage selector, we could actually do with all ...