Review on Jabinco 20pcs Clip-on Ferrite Ring Core Noise Suppressor Cable Clip Set for Various Diameter Cables - Black by Daniel Ogbebor

My Ender 3 V2 display started making noise and jumping through menus after I installed the LED backlight in its case. A little research has shown that many people have observed similar behavior with all types of RF noise sources across the Ender range. I added these ferrite beads to the LED ballast outputs first; However, this was not enough to fix the problem. Adding to inputs and outputs was successful. Perhaps the real source of noise here is the AC/DC converter and not the LED ballast, but I won't play around with success here, especially considering how cheap they cost. I've since added them to both ends of the LCD cable and am considering adding them to stepper motor cables as they are known to produce HF noise which interferes with the thermistor. From now on I will always have this product on hand.