Summit X450, X450a, and X450e Series Switches
Summit Family Switches Hardware Installation Guide
103
● Redundant power input connector for optional connection to the EPS-C chassis (Model No. 10912).
This chassis can hold up to three EPS-600LS External Power Modules (Model No. 10913). The
connecting redundant power supply cable is shipped with the EPS-C chassis.
The PoE capability of the Summit X450e-48p switch varies depending on the number of external
power modules in use. For more information, see “Summit X450e-48p Power Supplies” on page 103
and “EPS-600LS External Power Module” on page 143.
● AC power input socket
The power supply operates from 100 VAC to 240 VAC.
Figure 82: Summit X450e-48p Switch Rear Panel
Summit X450e-48p Power Supplies
The Summit X450e-48p switch is powered by both an internal power supply and an optional external
redundant power supply system.
Internal Power Supply. The internal Summit X450e-48p power supply can provide 370 W of PoE
power, as follows:
● In a 24-port configuration, it provides 15.4 W to each port.
● In 48-port configuration or any combination of ports where total PoE power does not exceed 370
watts, it provides 7.7 W to each port.
If the total system demands exceed this power limit, you can specify:
● Port priorities to identify which ports should be ranked higher when allocating power.
● Port disconnect precedence to specify the method of shutting off ports when not enough PoE power
is available.
NOTE
For a detailed discussion of these concepts, see the Power over Ethernet section in the ExtremeXOS
Concepts Guide.
External Power Supplies. The Summit X450e-48p switch can be powered by one, two, or three
external power modules through the redundant power input connector on the rear of the switch.
The EPS-C (External Power Supply Chassis) is shipped with the redundant power supply cable that
connects to the redundant input connector on the rear of the switch. The EPS-C chassis can hold from
one to three 600-Watt EPS-600LS external power module units.
SH_033
10 Gigabit
uplink option
Management port
10 Gigabit
stacking ports
Power socket
External power
supply connection
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