EPS-150DC External Power Module (with EPS-T2)

The EPS-150DC External Power Module (Model 10909) is a modular power supply for use in the EPS-T2 External Power System Tray.

You can use the EPS-150DC as a redundant power supply with the following Extreme Networks switches:
  • Summit X250e-24tDC switch
  • Summit X250e-24xDC switch
  • Summit X250e-48tDC switch
  • Summit X450a-24tDC switch
  • 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 sufficient 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.


The external power module is not connected.



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.
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EPS-150DC Redundant Power Cord Connector