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A comment on Former student destroys 59 university computers using USB Killer device. Parent comment

Re:Former student destroys 59 university computers using USB... by Dylan16807 on Friday April 19, 2019 @12:54AM (#19697189)
The transformer mainly protects you from a voltage difference between a twisted pair and ground. Much less so from voltage across a twisted pair. But saturation could help limit the current spike, at least.
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Re:Former student destroys 59 university computers using USB... by jrockway on Friday April 19, 2019 @01:06AM (#19697230)
That makes sense. The pair shouldn't have a voltage on it, that's why it's a twisted pair.
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