Installing System Components | 277 
 
 
4  Disconnect all the cables from the backplane. See Figure 3-90 for 3.5-
inch hard drives and Figure 3-91 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 3-90.   Back View of the 3.5” Direct Backplane 
backplane power connector for 
power supply 1 
1x8pin fan controller board 
connector 
SGPIO connector 4 for system board 
SGPIO connector 3 for system 
SGPIO connector 2 for system board 
2 
SGPIO connector 1 for system 
board 1 
SATA2 hard drive connectors 1, 2 
and 3 for system board 1 (from top 
SATA2 hard drive connectors 1, 2 
and 3 for system board 2 (from top to 
SATA2 hard drive connectors 1, 2 
and 3 for system board 3 (from top 
SATA2 hard drive connectors 1, 2 
and 3 for system board 4 (from top to 
backplane power connector for