|The blue retention clips are for the two PCI card slots and the two non-hot-swap PCI-X slots. The green retention clips are for the PCI-X hot-swap cards. The four LEDs above the green clips indicate the status of the hot-plug PCI/PCI-X adapter cards. Green indicates power to the slot, amber indicates a fault in the slot, and no light indicates no power to the slot. The PCI retention clips need to be closed for newly added Hot-Plug cards to be recognized.
The PCI/PCI-X slots are numbered 1-8 starting with slot 1 on the left in the graphic.