Lenovo ThinkSystem SR635 V3 - Page 278

Figure 198. Cable routing for NVMe onboard configuration of 6 front SAS/SATA drives and 4 front AnyBay drive bays
Table 39. Mapping between one front AnyBay backplane and system board assembly for NVMe onboard configuration
From To
1 NVMe 0-1 and 2-3 on the front backplane
1 PCIe connectors 4 and 3 on the system board
assembly
268 ThinkSystem SR635 V3 User Guide