This is a 12V fixed-voltage power supply adaptor designed to meet the exact power specifications of your Roland E-12 Keyboard. Specifications: - Output voltage is 12V - Maximum output amperage is compatible with your device - Output tip size and specification are correct and have been thoroughly tested - 2-pin plug compatible with Type C (EU) wall sockets - Input voltage is AC 100-240V, 50/60Hz This replacement power supply for Roland E-12 Keyboard is: - Compliant with safety standards and includes overvoltage, overcurrent, and short-circuit protection to help protect your device - RoHS and CE certified - Energy Star Level 6 certified for improved energy efficiency - Backed by a 2-year warranty: if the unit fails within 2 years of purchase, it will be replaced