Using this Avitech MCC - 8001U Image Scaler/Processor is easy. First, connect it to the correct power supply that comes with it. Then, you can start using it to scale and process images. As for the louder - than - normal fan, don't worry too much. It's a known issue. Just make sure to place the device in a well - ventilated area to help with heat dissipation. For maintenance, you can clean the fan regularly to keep it running smoothly. Avoid exposing the device to moisture or extreme temperatures, as this may damage it.