Riser card 3 (x8/x8 Gen 4 PCIe) signal cable connection
Figure 282. Cable routing when two processors installed Figure 283. Cable routing when one processor installed
From To From To
1  MCIO 1 on the riser card 1  Onboard: PCIe 9 1  MCIO 1 on the riser card 1  Onboard: PCIe 9
2  MCIO 2 on the riser card 2  Onboard: PCIe 8 2  MCIO 2 on the riser card 2  Onboard: PCIe 10, 11
302 ThinkSystem SR665 V3 User Guide