HP ProCurve 2520 Planning And Implementation Manual page 45

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N o t e
HP ProCurve Networking highly recommends that power supplies are not
mixed in the same 5400zl/8200zl chassis or Power Supply Shelf.
The J8713A power supply provides up to 900 watts of PoE power. If two
J8713As are installed they can supply up to 1800 watts of PoE power and
if four are installed they can supply up to 3600 watts of PoE power. The
two types of power supplies can be mixed (although not recommended),
that is, one or two J8712As and one or two J8713As can be installed at the
same time depending on which of the Series 5400zl/8200zl Switches are
being used.
The J9306A power supply provides up to 300 watts of PoE/PoE+ power
at 110-127V and 900 watts of PoE/PoE+ power at 200-240V. Mixing this
power supply with any other type of power supply is NOT supported.
Operating Rules
Overview of Switch PoE Operation
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