UpBright NEW 19V AC / DC Adapter For Asus Laptop Notebook PC D550m D550M-DS01 19VDC Power Supply Cord Cable Battery Charger Mains 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.