HP J3100B Installation And Configuration Manual page 182

Switch Reference
Back of the Switch
HP J3136 AdvanceStack Switch 2000 Redundant Power Supply
(RPS—Optional)
The RPS is an optional power supply you can connect to your Switch 2000 for
backup power in case the main power supply fails. Also, adding an RPS to
your switch helps to extend the life of the main power supply because the two
power units work together to share the power load. For more on the RPS, refer
to "Install the Redundant Power Supply (Optional)" on page 1-5, and to the
documentation provided with the RPS.
C a u t i o n
Power to the Switch 2000 should be off before you install the RPS. For this
reason, you should perform an RPS installation only during a scheduled down
time, when you can remove power from the switch.
Refer to the documentation provided with the RPS before connecting it to the
Switch 2000.
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