Specifications: AC input voltage ……100-240VAC (Global) Input frequency ………47-63Hz AC inrush current(max.) …….20A/230V Line regulation (full load) .......±0.5% Peak- to -peak ripple ……. <100MV Working temperature………….0-35℃-100% ,50℃-70% load Setup rise hold up time………100ms,50ms,20ms-240VAC input Strong made totally compatible part Overvoltage protection………115%-135% rated output voltage Withstand voltage………I/P-O/P 3Kvac,1 minute Overload protection ………115%-135%fold back current limiting, Auto-recovery Feature: Low interference and noise Advanced technology and high quality High efficiency and reliability Short circuit protection, Over-temperature protection, and Overvoltage protection A durable and well-made laptop power adapter guarantees long term use PCB & Cover is manufactured with Fireproofing materials. Power Exchange Savings more than 5658% (More power exchange savings means less power wasting and working more efficient with your computer). Use temperature protection NTC. Use insulation paper to isolate electrodes. Use fire protection glue paper and silica gel for safety features, it's security when notebook PC computer is working.