... for ASUS 19V 2.1A 40W 2.5*0.7MM Input Voltage:AC100-240VOutput Voltage:DC 19VOutput current:2.1ATotal output power:40WOutput Tips:φ2.5*φ0 ... customer service, fast delivery, competitive price. we supply both branded laptop adaptors,battery and power cord for Dell, HP, SONY, Acer,Toshiba ...