Install a 450 W or 550 W Internal DC Power Supply

Summit 550 W power supply units (PSUs) are available with either front-to-back or back-to-front airflow. If you install two PSUs, both must have the same airflow direction.

Summit 450 W power supplies are compatible with Summit X480 series switches and with Summit X670 series switches that have front-to-back ventilation airflow.

Summit 550 W power supplies are compatible with Summit X670 and X770 series switches. They are available in versions for switches with either front-to-back or back-to-front airflow.

Note

Note

You cannot combine power supplies of different wattages in the same switch.

To install a Summit 450 W or 550 W DC power supply, refer to the following sections as needed:

  1. Make sure you have the tools and materials you need.
    See Required Tools and Materials for Installing a 450 W or 550 W DC Power Supply.
  2. Prepare the power cables and ground cable by attaching the provided connection lugs to the cables.
    See Preparing the Cables for a 450 W or 550 W DC Power Supply.
  3. Insert the power supply into the switch.
    See Installing a 450 W or 550 W DC Power Supply.
  4. Connect the ground wire.
    See Connecting the Ground Wire to a 450 W or 550 W DC Power Supply.
  5. Connect the power supply to the electrical source and energize the DC circuit.
    See Connecting a 450 W or 550 W DC Power Supply to the Source Voltage.
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