HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide

8-4

Planning and Implementation for the HP 2910-PoE+ al Switches

Planning the PoE Configuration

This section assists you in building a PoE+ configuration. Using the following

examples you can plan, build, and connect PoE+ devices quickly and easily.

There are four configurations:

■ HP 2910-24G-PoE+ al Switch

■ HP 2910-24G-PoE+ al Switch connecting an external power supply

■ HP 2910-48G-PoE+ al Switch

■ HP 2910-48G-PoE+ al Switch connecting an external power supply

Each example shows a complete configuration. A table shows the PoE+ power

available to connected PoE+ devices when using just the switch and when

connecting an external power supply.

Once you have selected your specific configuration and the PoE+ power

provided, you then add up the maximum amount of power each device

requires (use maximum power in watts, usually found on a product’s data

sheet). Adjust this total maximum power figure by adding 16% to account for

possible line loss. This value must be less than the maximum power available

shown in the table for your configuration.