Installation Guide

• Summit X450a-24xDC switch
• Summit X450a-48tDC switch
When this power supply is used with one of the listed Summit switches, the internal and external power
supplies are fully fault tolerant and load-sharing. If one power supply fails, the other power supply will
provide sucient power to operate the switch.
The EPS-T2 is a rack-mountable chassis or tray that holds one or two EPS-150DC power supplies. Each
EPS-150DC provides one-to-one redundancy to an attached Extreme switch. You must install the
EPS-150DC power supply in the EPS-T2 tray.
The front panel of the EPS-150DC unit has a green LED to indicate operating status as shown in the
following table.
Power LED Meaning
Green, solid The external power module is operating normally.
O The external power module is not connected.
Note
For centralized DC power connection, this product is intended to be installed in restricted
access locations (dedicated equipment rooms, equipment closets, or the like) in accordance
with Articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70.
Each EPS-150DC power supply is shipped with a special redundant power supply cord.
Figure 160: EPS-150DC Redundant Power Cord Connector
EPS-160 External Power Module (with EPS-T)
The EPS-160 External Power Module (Model 10907) is a modular power supply for use with the EPS-T
chassis.
You can use the EPS-160 as a redundant power supply with the following Extreme Networks switches:
• Summit X150-24t switch
• Summit X150-24x switch
• Summit X150-48t switch
• Summit X250e-24t switch
• Summit X250e-24x switch
• Summit X250e-48t switch
EPS-160 External Power Module (with EPS-T)
Power Supplies for Use with Your Switch
168 Summit Family Hardware Installation Guide