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Comment by IgorPartola | Hacker News Reader

Mhm. Same USB 3 is the protocol while USB C is the connector. You can totally have USB 2.0 only USB C ports.

Many of the first phones that launched with USB-C connectors were USB 2.0.

Additionally, it might even make sense to have the power plug only be USB-2.0, if it's cheap. No reason to have a thunderbolt 3.0 cable plugged into the wall all the time

Unless you want to use your external display as power supply and usb hub at the same time with just one cable.

Some of us do work in actual offices and not in some coffee shops down the street. ;)

> Some of us do work in actual offices

Whoah, what's up with that? Not sure why you're inferring this coffee shop story or why you're doing this smug posturing thing but it's pretty obnoxious.

but it’s not what parent author wrote. idea was to use usb-2 cheap cable as a cable to transfer electricity between charger and laptop.

USB 2.0 specifies a maximum of 20AWG wire width for power transmission, which would limit you to 1.5A for charging.

http://sdphca.ucsd.edu/lab_equip_manuals/usb_20.pdf

We're talking about usb-2.0 data over usb-c cable. It'll still have the power delivery of usb-c

And that wastes physical real estate that could be used for a more modern cable. And with more USBC / thunderbolt cables around, theyll also get cheaper.

Can you have USB 3.x over Type A?

Yes, USB 3.X type A has additional pins, all the “blue“ type-a ports can support USB 3.0 and 3.1 gen 1/2 depending on the controller powering them.

USB-C adds additional pins for alt-mode as well as a higher power delivery allowance, but the USB data protocol part of it is the same as any other type of port of the same spec.

Type A, Type B, Micro B, and C are all valid: https://en.wikipedia.org/wiki/USB#Receptacle_(socket)_identi...

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