IBM Power System 9009-22G Manual page 25

Figure 9. Connecting the NVMe cable for a system with two NVMe U.2 pass-thru cards in slot P1-C49
and slot P1-C50
5. To install or replace the NVMe U.2 pass-thru card, complete the following steps:
a) Route the NVMe cable into position while you lower the NVMe U.2 pass-thru card into its slot.
b) Push the NVMe U.2 pass-thru card down to seat the card.
c) Push in and twist the screws (A) clockwise to fully seat the NVMe U.2 pass-thru card.
NVMe U.2 pass-thru card for the 9009-22G or 9223-22S 11