Oracle X5-4 Service Manual page 207

There are three clips. The HBA cables are attached to the bottom clip.
b. Once the HBA cable is clear of the air divider clips, gently pry the air divider
cable shield [A in the figure above] away from the power supply just enough
to allow you to slide out the HBA cables.
The HBA cables need to be completely free of the air divider.
6. Carefully thread the ends of HBA cables you detached from the HBA through the
narrow space between the P0 heat sink and the power supply cage and up and
out of the system.
The space between the P0 heat sink and the power supply cage is narrow;.the SAS cable
connectors will only fit through one way.
Replace the SAS 12 Gb/s Internal HBA SAS Cables (FRU)
Servicing FRU Components 207