521 Unable to detect a Fibre Channel adapter

Explanation
The system cannot detect any Fibre Channel adapters.

User response
Ensure that a Fibre Channel adapter has been installed. Ensure that the
Fibre Channel adapter is seated correctly in the riser card. Ensure that the
riser card is seated correctly on the system board. If the problem persists, exchange FRUs for new
FRUs, one at a time.