Turn on the Extreme 9920

An AC power cord is not included with the AC power supply. You can purchase AC power cords for use in the US and Canada from Extreme Networks or from your local supplier. The cord must meet the requirements listed in Power Cord Requirements for AC-Powered Switches and AC Power Supplies.

Use the following instructions to turn on the device.

  1. For devices that are connected to AC power, connect the power cord to the AC power input socket on the device (or power supply) and to an AC power outlet.
  2. For devices that are connected to DC power, do the following:
    1. Verify that the DC circuit is de-energized.
    2. Verify that the ground wire is connected to the grounding lug on the rear of the device.
      The grounding lug is identified by the international symbol for earth ground: International symbol for earth ground.
    3. Verify that the DC power input cables are properly connected to the DC power supplies at the rear of the device.
    4. Energize the circuit.
  3. When power is connected, verify that the PSU LED is green.

If the PSU LEDs do not turn green, refer to the 9920 LEDs topic for your device for troubleshooting information.

9037024-00 Rev. AB