(Note: This adapter has OD: 7.4mm Black Big Plug Tip with center pin inside as the image. Please Check For Compatibility With Your Unit. Thanks.) World Wide Input Voltage 100-240VAC 50/60Hz. OVP, OCP, SCP Protection 18.5V 3.5A 65W w/ 7.4mm Black Big Plug Tip AC/DC Adapter Compatible with HP 20zw 23zw All-in-One 20-r110zw 23-r140zw Desktop PC 18.5VDC 3500mA DC18.5V 3.5 A 18.5 Volts 3.5 Amp 18.5 V 3500 mA Power Supply Cord Battery Charger Compatible with HP Spare 693711-001 AD9043-021G2 677774-004 18.5V 3.5A 65W w/ 7.4mm Black Big Plug Tip Power Supply Tested Units. In Great Working Condition.