Lenovo ThinkSystem SR250 V2 Maintenance Manual page 55

Eight SATA/SAS drives (Software RAID)
Figure 39. Eight SATA/SAS drives (Software RAID)
From
Backplane: Power connector
1
Backplane: SATA signal connector 1
2
Backplane: SATA signal connector 2 (Signal)
3
Backplane: SATA signal connector 2 (SGPIO)
4
To
System board: Backplane power connector
System board: SATA connector 0-3
System board: SATA connector 4/5/6/7
System board: SGPIO1 connector
Chapter 3
.
Internal cable routing
47