The Maplin EU Switching Power Supply 5V DC 2 Amp 2.1 x 5.5 x 10mm Plug regulates output voltage sent to your device using pulse width modulation. Tip Dimensions: 2.5mm (ID) x 5mm (OD) x 9mm (H) Output: 5.0V - 2000mA Cable Length: 3m EU power adapter - 5V 2A