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General Chat Thread, USB etc Cables - what function does the 'lump' perform. in General; A friend recently asked me what that chunky little lump that appears on USB ect cables does. I have always ...
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    speckytecky's Avatar
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    USB etc Cables - what function does the 'lump' perform.

    A friend recently asked me what that chunky little lump that appears on USB ect cables does. I have always assumed it's some sort of surge protection but couldn't give a defo answer?

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    It contains precious metal, which justifies the £14.99 price tag from some retailers ;-)

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    If you're referring to what I think you are, it's called a ferrite bead and is to help reduce interference:

    Ferrite bead - Wikipedia, the free encyclopedia

  4. 2 Thanks to AngryTechnician:

    Rawns (6th January 2012), speckytecky (6th January 2012)

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    Ferrite Bead or choke ... to deal with interference and so on. Had the problem with some devices that they are just not happy with a cable without this ... in particular those which are host powered.

  6. Thanks to GrumbleDook from:

    speckytecky (6th January 2012)

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    Well, I learnt something today. Incredible as it's 4:30pm on a Friday!



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