With this notebook adapter you will always have a secondary power solution available for at the office, at home or for when you are travelling. It is also the perfect replacement for a broken or lost adapter. Charge your notebook easily and use the built-in USB port to power and charge your mobile devices like your mobile phone, smart phone, MP3 player etc. You can change the power output with one button to 15v/16v/18v/19v/20v/22v or 24v. The package includes 15 different tips, which cover all major notebook brands/models. This adapter is protected against overload, short circuiting and overheating.