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A comment on The DisplayPort Pin 20 Problem. Parent comment

Re:The DisplayPort Pin 20 Problem by hatsunearu on Saturday May 26, 2018 @10:20PM (#17165161)
Or, you know, make sure cables are ratifying standards, or if you're a GPU manufacturer, make sure the 3V3 supply is tolerant to being externally driven and doesn't backpower anything in the GPU (not exactly hard).
[ Parent | on HN ]
Re:The DisplayPort Pin 20 Problem by ThisIs_MyName on Sunday May 27, 2018 @03:13AM (#17165879)
> if you're a GPU manufacturer, make sure the 3V3 supply is tolerant to being externally driven and doesn't backpower anything in the GPU

That's exactly what a "diode on the device side" does.

[ Parent | on HN ]
Re:The DisplayPort Pin 20 Problem by hatsunearu on Sunday May 27, 2018 @05:35AM (#17166208)
Which adds loss. There are better ways to solve this than the "Undergrad Freshman" approach.
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