Using these Marshall dual screen monitors is easy. First, connect your video source to the monitors. Since they don't come with a power supply, you'll need to use a compatible one. Make sure to plug it in properly to avoid any power issues. When using, place the monitors in a well - ventilated area to prevent overheating. For maintenance, keep the screens clean by gently wiping them with a soft, dry cloth. Don't use harsh chemicals as they may damage the screens. Also, when not in use, turn off the monitors and unplug the power source to save energy and extend their lifespan.