When the data or power transmission between the poe port and the terminal device is abnormal, the corresponding poe port of the device will automatically detect the problem and restart the connection.
Turn on the extension switch, it enters the AI mode(POE port will judge whether it enters the ultra-long distance (820ft/10Mbps) mode according to the actual situation). Extend function extending max power and data transmission distance from 100 meters (330ft) to 250 meters (820ft), which is easy to expand network via ethernet cable to somewhere without power supply but need fix device such as IP Cameras.
The poe port will intelligently judge whether the device connected to the port needs power supply. If it is a non-poe device that does not need power supply, the switch will not supply power to these devices and will not damage the device.