RioRand 75W DC Volt Adjustable Voltage Regulator Converters with Screw and Heatsink Constant Voltage&Current 5-36V to 1.25-32V 17V Buck Step Down DC/DC Converter Module Regulated LED driver Switching Power Supply DIY Digital LED Display USB Output Interface Powered by RioRand Advanced Technology Input voltage : 5-36V;Output voltage :1.25-32V continuously adjustable,default output 17V; Output Current : 5A MAX( Please use it within 4.5A); Output Power: Max 75W ( Please use it within 50W. if the pressure difference is big,please reduce power) Conversion efficiency : up to 96% Short circuit protection;Overtemperature protection; Wiring:(solder terminals) V-IN is the input, V-OUT is the output; Installation: 4pcsx 3mm screws