UpBright New Global 16V AC/DC Adapter Replacement For Yamaha PSR-S500 PSR-S500B PSRS910 PSRS550B keyboard 16VDC DC16V 16.0V 16 Volts Power Supply Cord Cable PS 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. UpBright New Global 16V AC / DC Adapter Replacement For Yamaha PSR-S500 PSR-S500B PSRS910 PSRS550B keyboard 16VDC DC16V 16.0V 16 Volts Power Supply Cord Cable PS Battery Charger Mains PSU