Dell PowerEdge R920 Owner's Manual page 103

Figure 56. 2.5 Inch (x4) SAS/SATA Backplane—Back view
1. backplane power cable
Figure 57. Removing and Installing the 2.5 Inch (x24) SAS/SATA Backplane
1. release tab (2)
3. backplane jumper connector for the expander
daughter card
5. SAS connector
7. backplane hook (8)
2. system board miscellaneous signal cable
2. backplane jumper connector
4. backplane power cable
6. hard drive connector
8. backplane power cable
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