1, Full copper pin, no ground. 2, CE, CB 3, High reliability 4, Good quality, Competitive ... 5V-40Vdc Output Current Range: 0.3A-2.0ATotal Power: 9W Max. Line Regulation 1 %Load Regulation 5 ... 47 Part 15, EN55022, EN61000-3 /Conduction and Radiation MetEMS EN 50024 (EN61204-3), EN61000-4Applications :Telecommunication, Test Instrument ... (Inner positive), and Optional. 12V UK 3pin switching power supply