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A comment on Why aren't motherboards mostly USB-C by now? (2021). Parent comment

Re:Why aren't motherboards mostly USB-C by now? (2021) by cesarb on Sunday November 19, 2023 @09:17AM (#38332830)
> And I already have to buy a serial (rs232) adapter, because they removed it for no real reason.

RS-232 is a pain, it's one of the few users of negative voltages on a PC (others being ISA cards and PCI cards; PCI Express finally removed the last negative voltage pin), and the input needs to be tolerant of any voltage between -25V and +25V. I can see why computer manufacturers would love to not have to deal with it anymore.

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Re:Why aren't motherboards mostly USB-C by now? (2021) by ajsnigrutin on Sunday November 19, 2023 @05:15PM (#38338911)
And somehow a usb->rs232 adapter can handle all that, including negative voltages and costs less than $5, and a max232 chip for less than $1.
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