Those like me who travels a lot and wants to travel light, the happy about every gram of what you can save in your pocket. You do not say much about the power supply. It does what it should. Without problems for several months.
I just wonder why the Lenovo extradite not the same as a standard with. Who, significantly over 1500 - outputs for NEN business notebook, which might be something you expect ... anyway ... Recommendation: Buy.