IBM eServer xSeries 455 Faq page 28

Installing a hot-plug PCI adapter
See the information that comes with the xSeries 455 server and the following
instructions to install a hot-plug PCI adapter in an empty slot.
Note: You must log in as root to issue hot-plug commands.
22
xSeries 455 FAQ: Hints and Tips
1. Type the following command and examine the output to verify that the
pci_hotplug and acpiphp device drivers are loaded:
# lsmod
2. Type the following command and examine the output to verify that the PCI
hot-plug file system is mounted:
# mount
3. Save a listing of the PCI devices that are currently installed. For example, type
the following command:
# lspci > /tmp/lspci$$.out1
4. Slide the adapter-retention latch while lifting the tab for an empty PCI slot.
5. Install the new PCI adapter:
a. If you are installing a full-length adapter, open the blue adapter guide by
lifting the front edge, as shown in the illustration.
b. Carefully grasp the adapter by its top edge or upper corners, and align it
with the connector on the PCI-X board.
c. Press the adapter firmly into the adapter connector.
Adapter guide
PCI-X
divider
Attention
LED
Power
LED
Adapter
retention
Tab
latch