Identifying the Airflow Direction
The power supply and fan assemblies are
identified by the following airflow directions:
- Intake power supply and fan assembly with an orange
"I" label or without any label: Pulls air from the nonport-side of the switch
and
exhausts it out the port side.
- Nonport-side air intake
- Port-side air exhaust
- Back-to-front (nonport-side to port-side) airflow
- Part numbers ending with -R
- Exhaust power supply and fan assembly with a green
"E" label: Pulls air from the port side of the switch and exhausts it out the
nonport side.
- Nonport-side air exhaust
- Port-side air intake
- Front-to-back (port-side to non-port-side) airflow
- Part numbers ending with -E2
