... Gold Supplier in adapter 4.UL,CE,GS,SAA,PSE,EK,CCC laptop power adapter 40WInput Voltage/Frequency: ... current protection,short circuit protection,over hot protectionlaptop power adapter working temperature: -10C - 40Cstorage temperature: -40C ... : EN55013,EN55022 CLASSB,EN6100security Approval : UL, CE, GS, SAA, PSE, EK,ROHS compliance and EMC standardStandard ... . hengguang 40W 36V UL laptop power adapter