AIRTHD 45W AC Power Adapter for Dell XPS 12/13/13 MLK/ 12 ULT Laptops Model No.:HK45NM140 Input:AC100-240V 1.3A 50-60Hz Ouput:DC 19.5V 2.31A 45W Interface Size: 4.5mm*3.0mm This handy wall adapter attaches easily to your power adapter, enabling it to fit into crowded sockets and power strips. With three AC prong positions, you choose the orientation that's best.