D-Link DGS-3426P Product Manual - Page 115

xStack® DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch Priority Use the pull-down menu to select the priority of the PoE ports. Port priority determines the priority which the system attempts to supply the power to the ports. There are three levels of priority that can be selected, Critical, High, and Low. When multiple ports happen to have the same level of priority, the port ID will be used to determine the priority. The lower port ID has higher priority. The setting of priority will affect the ordering of supplying power. Whether the disconnect method is set to deny low priority port, the priority of each port will be used by the system to manage the supply of power to ports. Power Limit This function is used to configure the per-port power limit. If a port exceeds its power limit, it will shut down. Based on 802.3af/802.3at, there are different PD classes and power consumption ranges; Class 0 - 0.44~12.95W Class 1 - 0.44~3.84W Class 2 - 3.84~6.49W Class 3 - 6.49~12.95W The following is the power limit applied to the port for these four classes. For each class, the power limit is a little more than the power consumption range for that class. This takes into account any power loss on the cable. Thus, the following are the typical values; Class 0 : 15400mW Class 1 : 4000mW Class 2 : 7000mW Class 3 : 15400mW User define: 16800mW As well as these four pre-defined settings, users can directly specify any value ranging from 1000mW to 16800mW. Click Apply to implement the changes. The port status of all PoE configured ports is displayed in the PoE Port Table. 106