Advanced micro computer cmos chip help to control.Display voltage and switches voltage automaticallyMulti-types of exchangeable connectors use for laptop and other digital products Safe and reliable with 15-24v output voltageInput 100-240v worldwide compatible Install EMC and EMI.Output Voltages: 15/16/18/18.5/19/19.5/20/24VDC 120W MaxTip Sizes: (mm)6.5 x 4.4 Fujitsu / Sony6.5 x 4.4 Fujitsu / Sony6.3 x 3.0 Nec / Toshiba5.5 x 2.5 IBM5.5 x 2.5 Acer / Fujitsu / / Compaq / IBM / Liteon / Gateway3pin plug for Dell5.5 x 1.7 Acer / Dell4.8 x 1.7 / Compaq / Delta / Asus5.5 x 2.1 Acer.