Dell E28S Series Owner's Manual page 91

Figure 22 Inside the system—with redundant power supplies (continued)
7. memory-module socket (B3, B4)
8. processor 2
9. memory-module socket (B1, B2)
10. memory-module socket (A1, A5, A2, A6)
11. processor 1
12. memory-module socket (A3, A7, A4, A8)
13. cooling fan (6)
14. hard drives/SSDs
15. optical drive
Installing and removing system components
Dell PowerEdge R430 Owner's Manual
91