Using the Panasonic AW - HS50 is straightforward. First, make sure you have a compatible power supply since this product doesn't come with one. Connect your video sources to the switcher according to the ports available. You can then easily switch between different video inputs as needed. When it comes to maintenance, keep the switcher in a clean and dry place. Avoid exposing it to extreme temperatures or humidity. As the OSD/Time knob cover is missing, be careful not to damage the knob during use. If you encounter any issues, check the connections first before seeking further assistance.