Dell PowerEdge R630 Owner's Manual page 134

Figure 82. Removing the 1.8-inch (x24) hard drive backplane
1. SD signal cable (3)
3. SAS cables (4)
5. guide pin
7. backplane
134 Installing and removing system components
2. SD signal cable connector (2)
4. SAS cable connector (4)
6. guide pin slot
8. release tab (2)