IBM 9080-M9S Manual page 401

Figure 339. Installing the front cover
5. 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.
NVMe backplane 395