Dell EMC PowerEdge MX7000 Quick Start Manual page 9

Figure 6. Tighten the threaded screw on the -48V side
20. Open the clamp-on ferrite (like a clam-shell), wrap it around both "-48V" and "RTN" cables.
21. Place the ferrite as close as possible to the strain-relief bar, and then close the ferrite. Ensure the latch snaps into locked
position.
Figure 7. Attaching the ferrite clamp
Assembling the -48V DC power input connector and cables 9