Using this PoE splitter is easy. First, connect the PoE cable from your 802.3af - compliant router or PoE power supply equipment to the splitter. Then, you'll get two outputs: one for data (Ethernet) and one for power (+12VDC regulated). Connect the Ethernet output to your non - PoE device for data transfer and the 2.1mm DC barrel jack to power it. Make sure you only use it with true 802.3af routers. If your router isn't PoE - capable, you can consider our passive PoE cable kit. For maintenance, keep it in a dry and cool place. Avoid exposing it to extreme temperatures or moisture. Regularly check the connections to ensure they are secure. If you have any issues, refer to the troubleshooting section or contact our support team.