1.laptop adapter manufacturer 2.Supplier to worldwide computer ... 240VOutput voltageDC 19V3.42AFrequency50/60hzEfficiencymore than 80%Power Cord5.5*1.7mm2*0.3 square mm100% new brand CCAEU, ... ABS fire-proof casePCBA100% new electrical componetsDC connectors5.5*1.7mm, 5.5*2.1mmProtectionOTP,SCP,OVP,OCPLED indcatorsshow the charging statusAdapter ... supply 19v 3.42a for Acer DC5.5*2.5MM,5.5*1.7MM for option