Figure 323. Cable routing when two processors installed Figure 324. Cable routing when one processor installedFrom To From To1 Backplane 1: SAS 1 Onboard: PCIe 7 1 Backplane 1: SAS 1 Onboard: PCIe 92 Backplane 2: SAS 2 Onboard: PCIe 5 2 Backplane 2: SAS 2 Onboard: PCIe 10, 1116i RAID/HBA adapterThe following shows the cable connections for the 16 x 2.5-inch SAS/SATA configuration with one 16i RAID/HBA adapter.To connect riser 3 and riser 4 cables, see “Riser 3/4 cage” on page 306.To connect riser 5 cables, see “Riser 5 cage” on page 309.To connect cables to the front and rear OCP interposer cards, see “OCP interposer cards” on page 297.Connections between connectors: 1 ↔ 1 , 2 ↔ 2 , 3 ↔ 3 , ... n ↔ n332 ThinkSystem SR665 V3 User Guide