Dell PowerEdge E31S Series Owner's Manual page 167

Steps
1. Use the hooks on the chassis as guides to align the hard drive backplane.
2. Lower the hard drive backplane until the release tabs snap into place.
3. Connect the SAS/SATA SSD data, signal, and power cable(s) to the backplane.
Figure 106. Installing the 2.5 inch (x16) SAS/SATA backplane
1. hard drive backplane assembly
3. backplane power cable
5. SAS cable (2)
Figure 107. Installing the 2.5 inch (x8) SAS/SATA backplane
1. hard drive backplane
3. backplane power cable
5. backplane signal cable
2. backplane signal cable
4. release tab (2)
6. mini SAS connector (2)
2. release tab
4. SAS cable (2)
6. mini SAS connector (2)
Installing and removing system components 167