IBM FC EJ08 Manual page 18

c) Stop the system. For instructions, see Stopping a system (www.ibm.com/support/
knowledgecenter/POWER9/p9haj/crustopsys.htm).
8. If you chose to complete this repair with the power off, label and disconnect both UPIC cables from
the system control unit as shown in the following figure.
a. Remove the white plastic lock (A) from the plug housing as shown in the following figure.
Figure 3. Removing the UPIC cable lock
b. Push down on the blue cable latch (B) and pull out the UPIC cable from the system control unit, as
shown in the following figure.
4 Power Systems: PCIe adapters for the 9080-M9S