... ; Heat reduction 4.small enough to carry around Specification of laptop charger: 1.lntput voltage: AC 100-240V 2.Frenquency: 50 ... to the EN55022B,GB39254 standard Suggested application: Digital Camera, Notebook/laptop adapter ,ADSL AP, Wireless Lan Station, LCD power supply, Hard ... Terminals, Any Portable Device or Machine ,etc. Detailed picture of laptop charger: