Switch Mode Power Supply, 100 to 240Vac Input Voltage, 20Vdc Output Voltage, 2.0A Output Current, 40W Output Power, Short-Circuit, Over Voltage, Over Load Protection Mode, UK, 120g, 2.1 x 5.5 x 12mm +ve Centre, UL, cUL, CE, GS, CB, PSE, BSMI, 3C Approved. Complete with mains lead.