Lenovo ThinkSystem SR650 V2 - Page 88

Riser card 3 (x16/x16 PCIe) cable connection
Figure 21. Cable routing for x16/x16 PCIe riser card 3
From To
1 MCIO 1 and MCIO 4 on the riser card PCIe connectors 1 and 2 on the system board
2 MCIO 2 and MCIO 3 on the riser card PCIe connectors 5 and 6 respectively on the system
board
78 ThinkSystem SR650 V2Maintenance Manual