Extreme x250e-24t 安装指导

Summit Family Switches Hardware Installation Guide

The Summit X450e-48p switch is powered by both an internal power supply and an optional external 
redundant power supply system.

The internal Summit X450e-48p power supply is capable of 370 W of PoE power: 

15.4 W supplied to each port for a 24-port configuration and 7.7 W supplied to each port for a 48-port 
configuration or any combination of ports where total PoE power does not exceed 370 watts. 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

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.

The PoE capability of the Summit X450e-48p switch varies depending on the number of external power 
modules in use. 

 summarizes the PoE power behavior for the Summit X450e-48p switch based 

on the number of power supply modules in use. 

For more information, see 

370 W of 
redundant power

740 W of 
external power only

Internal PSU disabled

740 W of 
external power only 
with 2:1 redundancy

Internal PSU disabled

370 W of 
internal power only

370 W of 
external power only

740 W of 
external power only

740 W of 
external power only 
with 2:1 redundancy

No PoE power

SH_033

10 Gigabit

uplink option

Management port

10 Gigabit

stacking ports

Power socket

External power

supply connection