Lenovo ThinkSystem SR635 V3 - Page 263

Figure 190. Cable routing for onboard configuration of 4 x 2.5-inch front NVMe drive bays (using 4 x2.5-inch AnyBay
backplane (Gen 5))
Table 31. Mapping between backplane connectors and system board assembly connectors for onboard configuration
From To
1 NVMe 2-3 and NVMe 0-1 on the front backplane
1 PCIe connector 3 and 4 on the system board assembly
Chapter 6. Internal cable routing 253