Dell PowerEdge C6220 Hardware Owner's Manual page 220

4 Disconnect all the cables from the backplane. See Figure 3-72 for 3.5-
inch hard drives and Figure 3-73 for 2.5-inch hard drives.
Note the routing of the cable on the chassis as you remove them from
the system. You must route these cables properly when you replace
them to prevent the cables from being pinched or crimped.
Figure 3-72. Back View of the 3.5" Hard-Drive Backplane
1 backplane power connector for
power supply 1
3 SGPIO connector 4 for system board
4
5 SGPIO connector 2 for system board
2
7 backplane jumper
9 SATA2 hard drive connectors 1,2,
and 3 for system board 2 (from top to
bottom)
11 SATA2 hard drive connectors 1,2,
and 3 for system board 4 (from top to
bottom)
13 backplane power connector for
power supply 2
220 | Installing System Components
2 1x8pin fan controller board
connector
4 SGPIO connector 3 for system
board 3
6 SGPIO connector 1 for system
board 1
8 SATA2 hard drive connectors 1,2,
and 3 for system board 1 (from top
to bottom)
10 SATA2 hard drive connectors 1,2,
and 3 for system board 3 (from top
to bottom)
12 backplane power connector for
power supply 2