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

14-26
Planning and Implementation for the HP 5400R zl2 Switches
Configuration Examples
To achieve the 49 ports at 15.4 watts the PoE devices must be divided up and
connected to three different modules. Remember, as soon as a module is
installed into the switch, 22 watts is reserved for its use.
In this configuration one power supply (275 watts) could be used for
redundant power. However, remember it can only support a limited number
of ports depending on the wattages that are being supplied to the ports.
In this example (Figure 14-10) there are four power supplies supplying 254
watts each for a maximum of 1016 watts.
Figure 14-10.Example of an HP 5412R zl2 Switch with four power supplies, J9828A
The following table shows label and descriptions for HP 5412R zl2 with four
power supplies, J9828A:
Source of Power
(PoE/PoE+)
Watts Available Number of Ports Powered and Average
watts/Port
Redundant Number of Ports Powered
and Average watts/Port
Three Internal
Power Supplies
(J9828A)
762 (without
redundancy)
25 @ average 30 W each
49 @ average 15.4 W each
100 @ average 7.5 W each
187 @ average 4.0 W each
16 @ average 30 W each
32 @ average 15.4 W
66@ average 7.5 W each
123 @ average 4.0 W each
Label Description
1 65 ports can receive up to 15.4
watts of PoE power
2 Front