UpBright NEW AC / DC Adapter For HP 0950-4340 HP OfficeJet Q1639A Q1636A Q1644A Q1638AR Q1638A Printer Power Supply Cord Cable Charger PSU World Wide Input Voltage 100-240VAC 50/60Hz OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty.