Chapter 2: Summit Power Supplies
Summit Family Switches Hardware Installation Guide
154
Summit 750-Watt AC Power Supply
The Summit 750 W AC power supply (Model 10931) is available for PoE models of the Summit X460
series switches. This power supply is also used in the EPS-C2 external power system (see “EPS-C2
Redundant Power System” on page 147). Each installed Summit 750 W AC power supply can provide
up to 380 Watts of PoE power budget.
The Summit 750 W AC power supply has the status LEDs listed in Table 51.
Table 51: Summit 750 W AC Power Supply LED Meanings
Label and
Color State Meaning
AC OK
Green
Off No AC input
On AC input is good.
DC OK
Green
Off Both DC outputs (55 V and 12 V) are bad or not enabled.
Blinking One output is enabled and good; the second output is bad or not enabled.
On Both the 55 V and 12 V outputs are enabled and good.
ALM
Red
Off No fault condition exists.
Blinking Power supply alert: power supply is likely to fail because of a developing fault,
such as abnormal thermal conditions or poor fan performance.
or
One output (55 V or 12 V) is bad.
On Both outputs (55 V and 12 V) are bad.
Power supply is receiving 3.3 VSB from the system. (AC OK and DC OK are
off.)
Thermal shutdown, fan failure, or any fault condition when both 55 V and 12 V
are turned OFF.
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