A few years ago I decided to make sure everything I purchased was USB-C where possible. Items I have that I can think of:
-
Philips Sonicare toothbrush case - only works with USBA to C cable.
-
BlockBlueLight hexagon night light - only charges with the cable supplied USBA to C.
-
air mattress (random Amazon brand) inflator has USB c charger that will not charge anything but does allow the inflator to work, no power bank or USB-C charger works.
-
I have several “non-iQ” chargers with random incompatibility between Samsung and Apple devices.
-
A tennis racket style electric fly swatter works with some chargers and not others
-
USB-C IR camera which works on android but not on new iPhones due to some power pin incompatibility.
-
I have a drawer full of USB-C cables with various ratings up to 140w, have to select the correct one for the application.
It may be just that these are all pre-EU unifying the standards, but there is enough USB-C e-waste in my house that I purchased in good faith that USB-C means it’s compatible, but it isn’t.
No there are some silly proprietary techs which either prevent compatibility or severely limit charging speed. As well as a lot of devices which simply didn’t bother to put any circuitry in and just used the USB-C port as a dumb power connector which only works with their charger and cable. I provided examples in my last message.