Dell PowerEdge C6145 Hardware Owner's Manual page 196

4 Remove the screws that secure the 2.5" hard-drive cage to the chassis.
See Figure 3-49.
Figure 3-49. Removing and Installing the 2.5" Hard-Drive Cage (1)
1 2.5" hard-drive cage
5 Remove the screws that secure the front-panel assemblies to the chassis.
See Figure 3-49.
6 Disconnect all the cables from the backplane. See Figure 5-7 for 2.5
hard drives.
Note the routing of the cable underneath the tabs 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.
7 Disconnect all the cables from the expander card.
Note the routing of the cable underneath the tabs on the chassis as you
remove them from the system. You must route these cables properly
196 | Installing System Components
2 screw (10)
"