Using this AJA HA5 converter is simple. First, connect your HDMI source to the converter's HDMI input. Then, connect the SD/HD - SDI output of the converter to your destination device. As it doesn't have a power supply, you'll need to provide your own compatible one. Make sure to use a power supply with the correct voltage to avoid any damage. When not in use, store the converter in a dry and cool place. Regularly check the connection ports for any dust or debris and clean them gently with a soft brush. This will help maintain the converter's performance over time.