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U41243-J-Z156-1-76 99
System expansions Boards in hot-plug PCI slot
8.5 Boards in hot-plug PCI slot
The server is equipped with ten slots for hot-plug PCI. These hot-plug PCI slots
enable installation and removal of boards during operation when the operating
system supports this function.
Each hot-plug PCI slot is assigned two pairs of LEDs (hot-plug indicators) which
show the current status of the slot. One LED is visible on the back of the server
from the outside, the other is located on the inside in the area of the locking clip
of the related slot.
Figure 26: PCI locking mechanism
The PCI hot-plug mechanism is a rotating part that actuates a microswitch.
After the LED shows which slot is powered down, the PCI-board can be
removed by pressing on the mechanism actuator and rotating the mechanism
(figure 26 on page 99/PCI slot deactivated).
rear view
P C I s lo t d e a c tiv a te d
P C I s lo t a c tiv a te d