8 Hardware OverviewCAUTION: To prevent electrical shock, ensure the S6000-ON is groundedproperly. If you ground your equipment incorrectly, excessive emissions mayresult. To ensure the power cables meet your local electrical requirements, usea qualified electrician.The power supply LED (on the I/O panel) indicates the power supply status:• Off - no power• Solid green - Power supply present and workingFor additional LED information, refer to your third-party operating softwaredocumentation.FansThe S6000-ON supports three hot-swappable fans that provide cooling for thesystem. The S6000-ON has stock keeping units (SKUs) that support thefollowing configurations. Installation of the fans is done as part of the factoryinstall based on SKU type. The PSUs are installed at the customer site (refer toPower Supplies).• AC PSU with fan airflow from I/O to PSU• AC PSU with fan airflow from PSU to I/OAll fans and PSUs in a configuration must be in the same airflow direction.The S6000-ON supports three fan trays with airflow directions from I/O toUtility or Utility to I/O. The PSU airflow directions are indicated with stickerson PSUs.After Installing the S6000-ONAfter you have securely installed and powered on the S6000-ON, to configureyour system, refer to your ONIE-compatible third-party operating systemdocumentation.System StatusYou can view S6000-ON status information using the system LEDs.