Simple-swap drives
Use this section to understand the cable routing for server models with simple-swap drives.
See the configuration that is applied to the server. 
•  “Four 3.5-inch SATA drives” on page 
•  “Eight 3.5-inch SATA drives” on page 45
•  “Seven SATA drives and one NVMe drive” on page 46
•  “Six 3.5-inch SATA drives with ODD/tape drives” on page 
Four 3.5-inch simple-swap drives
Use this section to understand the cable routing for server models with four 3.5-inch simple-swap drives 
(software RAID).
From To
1
Lower backplate
Backplane 1 power connector
2
SATA 0-3
44 ThinkSystem ST250 V2 Maintenance Manual