Cable routing for 16-EDSFF drive backplane
The following table shows the cabling routing for the 16-EDSFF drive backplane. For the locations of relevant 
connectors on the processor board, see 
“System-board-assembly connectors” on page 33 for details.
From To
1  EDSFF 0-1, EDSFF 2-3 1  PCIe connector 1 and 2
2  EDSFF 4-5, EDSFF 6-7 2  PCIe connector 3 and 4
3  EDSFF Power 
3  Backplane power connector on the system board 
assembly
4  EDSFF 8-9, EDSFF 10-11 4  PCIe connector 5 and 6
5  EDSFF 12-13 5  PCIe connector 7
6  EDSFF 14-15 6  PCIe connector 8 and 9
280 ThinkSystem SR635 V3 User Guide