RS 20W to 150W ErP Single Output Switch Mode Desktop Power Supply 20W to 150W desk-top adaptor external power supplies with a single output. These desk-top adaptor power supplies have an energy saving compact design and are ErP level V compliant. The power suply is supplied without power lead, please see accessory link for correct lead. Standards: EN 60950-1, UL 60950-1, IEC 60950-1