Input: 100-240V 50-60Hz PK-Power products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specification OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) COMPATIBILITY: Please see full list of Replacement for models in the Product Description Our After Sale Service: Our friendly and reliable customer service will respond to you within 24 hours. PK Power AC Adapter for Yamaha DGX-640 DGX-500 DGX-505 P85 YPG-535 Keyboard PSU