Dell Precision 3930 Rack Service Manual page 32

NOTE: The hard drive back plane slots need to align with the alignment pin on the hard drive cage.
3 Re-route the SATA power cable and the SATA connector cables through the cable retention clip [1].
4 Connect the SATA power cable [2], the SATA 0 connector cable [3], and SATA 1 connector cable (for 2.5 inch hard drive back plane).
32 Removing and installing components