Using this product is quite simple. First, connect the transceiver to your device that supports multimode fiber with an ST connector. Then, plug in the correct power supply that comes with the product. Make sure the power supply is well - connected to avoid any interruptions. When using, keep the product in a dry and cool place. Avoid exposing it to direct sunlight or high - humidity environments. For maintenance, you can use a soft, dry cloth to gently clean the exterior of the transceiver every few months. If you notice any problems, check the connections first. If the issue persists, contact the customer service team.