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Comment by asadalt | Hacker News Reader

doesn’t usb-c significantly increase the components required? unless you skimp and just replace the connecter only, which won’t always work.

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It just needs two resistors on the CC lines.

My guess is the RPi foundation has a _ton_ of extra micro USB connectors they want to use up.

No, it just needs 2 extra resistors to work properly, but will work as-is if you use USB-A to USB-C cables and as long as you don't pull more power than available by default (i.e. you can request 3A @ 5V just by adding two resistors, but without it you're limited to USB's defaults)

In the past, when usb-c just got introduced micro usb ports for significantly cheaper than usb-c, so it made some sense. Today, it makes no sense.

You can't request 3A via resistors and you don't need to. You can advertise being able to source 3A via resistors. The sink does not advertise how much power it draws (unless it speaks PD), sink's responsibility is to check for what the source advertises (either via resistors or PD) before attempting to draw more power than USB default if you want to be compliant, which boils down to a simple comparator/ADC reading.

Simple sinks just use two 5.1k resistors for pull-downs, no matter how much power they want to draw - and they always need these resistors (two for receptacles, one for plugs), otherwise they won't work with USB-C sources at all.

Right, my bad, you're correct. For some reason, I thought it must be on both sides like that.

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