Dell PE R720XD Owner's Manual page 104

Figure 64. Removing and Installing the 2.5 Inch (x24) SAS/SATA Backplane—PowerEdge R720xd
1. x24 hard-drive backplane
2. left control panel cable
3. release tabs (2)
4. power cable A
5. sideband cable
6. pass-through I2C cable
7. SAS cables (3)
8. power cable B
104
9. backplane/expander bracket
10. right control panel cable
11. power cable C
12. front I/O cable
13. USB cable
14. hard-drive backplane connectors (24)