Plantronics Replacement AC Power Supply for Plantronics Wireless Headset Systems 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. UpBright New 9V AC / DC Adapter Replacement For Plantronics Wireless Headset Systems 9VDC Power Supply Cord Cable Charger PSU