... EN60950EMC standards ............................... meet GB9254, EN55022 classB, EN55024EN61000-3-2,3, EN61000-4-2,3,4,5,6,8,11Cooling method ............................... convection15W ... R&N EfficiencyHF15W-SSM-5 5V 3.0A 0.5% 80mV 77%HF15W-SSM-12 12V 1.3A 0.5% ... 7.0A 0.5% 80mV 77%HF35W-SSM-12 12V 3.0A 0.5% 120mV 81%HF35W-SSM-24 ... 80mV 76%HF75W-SSM-12 12V 6.0A 0.5% 120mV 81%HF75W-SSM-24 24V 3.2A 0.5% ...