P3.91,P4.8, P5.2, P6.25,P7.8, P10.4,P16, P31.25, P40,
P50, P55, P62.5, P75, P100, P150, P200, P250
EN 60950-1: 2006+A11: 2009+A1: 2010+A12: 2011+A2: 2013