Dell PowerEdge C8000 Hardware Owner's Manual page 138

Figure 3-2. Inside the C8220X with 2.5-inch (8-Drive Bay) Hard-Drives
1 mezzanine card
3 heat sinks/processors (2)
5 cooling shroud
7 internal 2.5-inch hard-drives (2)
9 2.5-inch hard-drive cage
11 hard-drive LED board
13 expansion card riser (for a low profile
and a full height PCIe cards)
138
Installing System Components
2 system board
4 memory (16)
6 interposer extender
8 2.5-inch hard-drive backplane
10 RAID battery
12 expansion card