laptop adapter 19v 4.74a 90W 1)Material: ABS or PS 2)output voltage: 19V 3)output current: 4.74A 4)OEM service Details of the products: 1)Light weight, ... ;6)Environment: operation temperature: a)0°C-40°C, 5%-85%RH; b)shorage temperature: -20°C-85°C ... of switching power supply: Desktop chargers, travel charger, car charger, battery charger , SMPS etc which are used for mobile, FWP, ADSL, laptop and so ...