Note: Make sure to match the drive backplane and NVMe switch card connectors as following: 
Table 16.  Drive backplane and NVMe switch card connectors
AnyBay/NVMe drive backplane 
connector
Switch card connector
0-1
C0
2-3
C1
4-5
C0
6-7
C1
Figure 26. Connecting cables to the NVMe switch cards
Step 5.  Open the retainers of x16/x16 4U PCIe riser cage, and install the two NVMe switch cards to 
corresponding slots: 
Table 17.  NVMe switch cards and corresponding PCIe slot numbers
AnyBay/NVMe drive backplane connectors  PCIe slot number
1
0-1, 2-3
Slot 10
2
4-5, 6-7
Slot 12
50 ThinkSystem SR860 V2Setup Guide