The Green Cell PRO power supply will quickly and safely charge your laptop HP 250 G2 G3 G4 G5 255 G2 G3 G4 G5, HP ProBook 450 G3 G4 650 G2 G3 The PRO series charger will work perfectly if the old power supply failed or you need a second charger, e.g. for the office. The power supply is distinguished by the highest quality of the components used, and consequently by the durability and safety of the work. Charger for years While most power supplies last only 1-2 years, the Green Cell PRO provides more than 3 years of trouble-free operation, even with continuous intensive use. In addition, the safety of the loaded equipment is incomparably greater than with standard power supplies.