To use this Symetrix 581E Distribution Amplifier, first connect the correct power supply that comes with it. Make sure the power supply is properly plugged in to avoid any power - related issues. Then, connect your input and output devices according to your signal distribution requirements. When handling the amplifier, be gentle to prevent any internal damage. For maintenance, keep it in a clean and dry place. Periodically check the connections to ensure they are secure. If you notice any abnormal behavior, such as overheating or strange noises, stop using it immediately and consult the manufacturer.