To use this Ross DFR - 8110A Digital RossGEAR Terminal, first make sure it's properly connected to your system. Insert the provided Ross SEA 8003 cards into their designated slots. When using, keep it in a well - ventilated area to prevent overheating. For maintenance, regularly check the cards for any signs of damage or dust. If you notice any issues, power off the terminal before inspecting. Avoid using it in a humid or dusty environment to ensure its longevity.