Using this video switcher is easy. First, connect the correct power supply to the switcher. Make sure the power supply is properly plugged in to avoid any power - related issues. Then, connect your video sources and displays to the appropriate ports on the switcher. You can now use the switcher to select which video source you want to display. When not in use, turn off the switcher and unplug the power supply to save energy. To maintain the switcher, keep it in a clean and dry place. Avoid exposing it to dust, moisture, or extreme temperatures. If you need to clean it, use a soft, dry cloth to gently wipe the surface.