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Summit Family Switches Hardware Installation Guide
79
Disconnecting the EPS-C/EPS-600LS. To manually disconnect an EPS-C or to remove the EPS-600LS
modules, the recommended practice is to disconnect the EPS-600LS modules one at a time, pausing two
seconds between each EPS-600LS disconnect. This enables a graceful power transition from the external
PSUs to the internal PSU.
Example: Two active EPS-600LS modules in an EPS-C
a Unplug one EPS-600LS unit from its power source.
PoE power is automatically reduced to 370 watts and the internal PSU is enabled providing
redundant 370 watt PoE power.
b Wait at least two seconds before disconnecting the remaining EPS-600LS unit.
c Unplug the second EPS-600LS unit from its power source.
The internal PSU is already enabled and provides uninterrupted 370 watts of PoE power.
NOTE
After an EPS-600LS unit is disconnected from its power source, it may be removed from the EPS-C. See
“Removing an EPS-600LS Power Module” on page 193 for complete disconnect and removal details.
d Disconnect the EPS-C from the switch.
Summit X480 Power Supplies
The Summit X480 series switches can be powered by either of the following power supplies:
● Summit X480 AC power supply (Model 10917)
● Summit X480 DC power supply (Model 10918)
Either power supply provides 450 W of power to the switch.
The Summit X480 series switches accommodate one or two Summit X480 PSUs. In a redundant power
configuration, both power supplies are fully fault-tolerant and load-sharing. You can remove one power
supply without interrupting switch operation.
An AC power input cord is not provided with the Summit X480 AC power supply. You can order an
appropriate cord from Extreme Networks or from your local supplier. The power cord must meet the
requirements listed in “Selecting Power Supply Cords” on page 218.