UpBright NEW AC / DC Adapter For Seagate SRD0NF2 STEG3000100 Expansion Plus 3TB Desktop Hard Drive HDD P/N: 1VAAA1-570 1V9AP3-500 Power Supply Cord 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.