Using the Ensemble Designs BrightEye Mitto Pro 2 BEM-4 is straightforward. First, connect it to your device as needed. Since it doesn't come with a power supply, you'll need to use your own suitable one. When using, make sure to place it in a well - ventilated area to avoid overheating. For maintenance, keep it clean by gently wiping it with a dry cloth. Don't expose it to water or other liquids. If you notice any issues, check your connections first and then contact customer service if the problem persists.