Lenovo ThinkSystem SR650 V2 - Page 86

Riser card 3 (x8/x8 PCIe) cable connection
Figure 19. Cable routing for x8/x8 PCIe riser card 3
From To
1 MCIO 1 on the riser card PCIe connector 2 on the system board
2 MCIO 2 on the riser card PCIe connector 5 on the system board
76 ThinkSystem SR650 V2Maintenance Manual