IBM 9080-M9S Manual page 198

Figure 165. Connecting the rear power cords
10. Using your labels, reconnect the UPIC cables to the system control unit.
UPIC cable locations are P1-C1-T1 and P1-C2-T1.
a. Ensure that the white plastic lock is pulled back from the plug housing.
b. Plug the UPIC cable (A) into the previously identified location in the system control unit by
inserting the cable into the connector until it locks into place.
192 Power Systems: Removing and replacing parts in the 9080-M9S system