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The internal power supplies are inserted in the back slots. These slots are labeled PS1 and PS2 on the
5406zl and PS1 through PS4 on the 5412zl. A power supply is hot-swappable provided at least one
other power supply is operational. If the 5412zl has only two power supplies and one of them fails,
then only the upper six slots (slots A through F) will receive power.
Power supplies
There are two different power supplies available for the HP ProCurve Switch 5400zl series. Both
power supplies provide system power (the power needed to run the switch itself) and PoE power (the
power sent down the Ethernet cable to power the device at the other end). The only difference between
the two supplies is the amount of PoE power available from the supply.
All HP ProCurve Switch 5400zl series chassis use the same power supplies. There are two internal
power supplies available:
• 875W (110V/220V)
• 1500W (220V)
As indicated in the following figure, the internal power supply provides both system power as well as
PoE. The HP ProCurve Switch 5400zl series, as well as the 3500yl series, can power any device that
adheres to the IEEE 802.1af standard. In addition, devices using pre-standard Cisco PoE power can
also be powered. The switches will automatically detect what type of power and how much is needed
when a compatible device is plugged into the port.
It is recommended that you use the same power supply model for all power supplies installed in a
given 5400zl series chassis.
Power supply types
System
power
PoE power
875W Internal Power Supply
875W Power Supply
J8712A
(110/220 VAC)
600W 273W
1500W Power Supply
J8713A
(220 VAC only)
600W 900W
HP ProCurve Switch zl
Power Supply Shelf
(J8714A)
0 Up to 1800W
Figure 5. Power supply choices
The internal power supplies provide system power for all internal components (+12V output within +/-
5% tolerance, regulated) and power for PoE ports (-48V output within +/- 5% tolerance, regulated),
which meets isolation and noise requirements of the IEEE 802.3af specification.