D-Link DES-1008PA Product Manual - Page 19
additional POE PD.
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For example: There are POE PDs connected to the POE Switch and the total power consumption is 48 watts. The system will reserve 8 watts for a buffer and the POE MAX LED will light up. Once there is another POE PD inserted, the system will not provide power to the additional POE PD. Priority: This function will help protect the system when the system power is overloaded. The system will disable the PoE function of lower priority PoE ports to maintain the power to higher priority PoE port s . The total power resource for the system is 56W shared between the 4 POE ports (maximum power for per port is 15.4W). If all POE PDs power consumption is over 56W, the system will automatically arrange the priority of these ports . The lower port number will have the higher priority and the higher port number will have a lower priority (Highest priority: Port 1 > Port 2 > Port 3 > Port 4). For example: In this POE Switch, Port 2 is using 15 watts and Port 3,4 is using 15.4 watts, these two ports are using 45.8 watts total. If there is an additional POE PD inserted to Port 1 with 15.4 watts, the system power resource is over current and the priority function will activate. The priority will be applied to the lowest port number to highest port number, so Port 1,3 will use 15.4 watts, Port 2 will use 15 watts, and the system will cut off the power to Port 4 due to over current. 13