[sparky27]

i have just bought a laptop and the modem lead is supplied with a ferrite core.why do i need to use this and can i do without it.the manual says that i should attach a core to audio leads aswell.your help would be gratefully appreciated.thanks

 

[Valiant]

I noticed that the sell them for older monitors too.... I think it has something to do with absorbing excess radiowaves and stuff... FCC regulations... but I really have no clue.