Installation Guide

Figure 163: EPS-C2 2x7 Pin Redundant Power Cable
EPS-LD External Power Supply Unit
You can use the Extreme Networks EPS-LD External Power Supply Unit (Model 45019) as a redundant
power supply with the following Extreme Networks switches:
• Summit X450a-24t switch
• Summit X450e-24p switch
When attached to the Summit X450e-24p switch, the EPS-LD provides 465 W total power with 375 W
dedicated for PoE applications.
The front of the EPS-LD has a green LED to indicate operating status as shown in the following table:
Power LED Meaning
Green, solid The external power supply is operating normally.
O The external power supply is not connected.
Note
An AC power input cord is not provided; you can order an appropriate cord from Extreme
Networks or from your local supplier. The power cord must meet the requirements listed in
Power Cord Requirements for AC-Powered Switches and AC Power Supplies on page 653.
Each EPS-160 power supply is shipped with a special redundant power supply cord.
Collin's
ES4K027
Figure 164: EPS-LD Redundant Power Cord Connector
X450 and X250 PoE Redundant Power
Configurations
The PoE capability of the Summit X450e-48p or X250e-48p varies depending on the number of
external power modules in use.
Power Supplies for Use with Your Switch
EPS-LD External Power Supply Unit
Summit Family Hardware Installation Guide 175