12V AC Adapter Power Supply Charger for Replacement for WD Western Digital My Book Essentials Hard Drive

General Description: 12V 2A AC adapter designed to replace the power supply for WD Western Digital My Book Essentials hard drives. Technical Specifications: Input Voltage: 100V-240V AC; Input Voltage Frequency: 50-60Hz; Output Voltage: 12V DC; Rated Output Current: 2000mA; Modulation Method: Pulse Width Modulation; Working Efficiency: 85%; Connector: 5.5 x 2.5mm (compatible with 5.5 x 2.1mm)