this post was submitted on 10 Aug 2024
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I bought a charging pad once that had a USB c connector but none of the 40 USB power adapters I have have one so I returned it. IDK wtf they were thinking. Just make the wall end an A connector like everyone else has been doing for a decade.
USB-C can deliver more power which is why they've been appearing more and more on charging bricks.
C-C carries more power than A-C?
USB-PD is only specified for USB-C. I think they use an extra channel for this configuration, so it's not possible to use PD over A plugs.
There were competing standards like Qualcom quick charge. AFAIK they never went above 20-ish watts on USB-A, while PD is specced at up to 240W.
Interesting. I always figured the wires inside were all the same.
Oh no the wires are a mess. Usb3 cables have extra wires and pins for super-speed. IIRC usb-c has said extra pins for usb configuration like pd or displayport alt mode. The wires can also be different. Some can carry more current, most cables are insufficient for really high data rates...