Dell PowerEdge R430 Owner's Manual page 146

Figure 81. Removing the eight 2.5 inch SAS/SATA backplane
1. hard drive/SSD backplane
3. backplane signal cable
5. release tab (2)
7. hard drive/SSD connector (8)
146 Installing and removing system components
2. backplane power cable
4. SAS_A cable connector
6. SAS_B cable connector