Ferrite Doughnuts

[compressor]

I see these included with cases but never an explantion as to where
or why to use them.
So, where? Why?

 

[Corporate Thug]

link to what your talking about?

 

[Zepper]

I see some loop the front panel wiring through them so RFI doesn't sneak onto or off from the mobo that way.

.bh.