Lenovo ThinkSystem SR550 - Processors

Figure 17. Cable routing for server models with eight 3.5-inch hot-swap drives and serial port module
Cable
From To
1 SAS signal cable SAS 0 and SAS 1 connectors on the
backplane
C0 and C1 connectors on the RAID
adapter installed in PCIe slot 1
2 Power cable Power connector on the backplane Backplane power connector 1 on the
system board
32 ThinkSystem SR550 Setup Guide