I don't like USB-C because they all look the same on the outside, but they're not all the same on the inside. Especially my cheap consumer electronics. Sometimes they will charge, sometimes they won't charge, but all the cables look the same, and you don't tend to know in advance.

If switching to a type-A charger fixes it, it’s probably the device manufacturer’s fault, not the cable. Many manufacturers that need the 5v standard you’d normally get from an old type-A charger screw this up.

For universal USB-C power support that works with modern power bricks, you need to tie 5k resistors to two pins of the port on the device. This tells the charger to use 5v. I can’t tell you how much cheap stuff out there omits these. They cost almost nothing but they still screw this up over and over, and people blame the standard or the cable…

  Especially my cheap consumer electronics. Sometimes they will charge, sometimes they won't charge

I read about this so often, yet it's a problem I just never encountered. If I need super high bandwidth like connecting a display, I pick one of those annoyingly unlflexible fat cables. Easy. They even tend to feature the TB4 flash icon. Surely I would not expect any of the light and nimble ones to do that trick. When I need strong PD, it's also either one of those or one of the far more flexible but still quite thick braided ones. Often they have some hinge gimmick connector to prevent any hope for bandwidth one might be tempted to have. All other cables, I expect nothing but legacy USB. Yeah, and some of those won't do data at all (curiosly those are never the lightest cables in my stable, the lightest ones tend to do the legacy USB "gear not, some bits will eventually get through!" just fine)

Buy yourself a handful of good cable for charging. (I quite like the silicone anker 643) And throw everything else away in a box.

For data transfer you can just pick up one or two thunderbolt 5 rated cables, they will do max transfer for USB4, or any other spec in the near future. The LTT true spec cables are fairly priced but there are other big brands that sell the same thing.

Keep a shitty USB-A to C for those devices that do not have the correct pulldown resistor to support 5v 2a charging.

> I don't like USB-C because they all look the same on the outside, but they're not all the same on the inside.

Many people don't realize that USB-C (USB Type-C) just refers to the physical connector. At minimum, speed and power ratings should have been required for any cable using USB-C at one or both ends. It's almost breathtaking to consider how the USB Implementers Forum has fumbled these kinds of basic issues over the years.

The thickness / durability of the cable is a pretty good indicator, if it's thin and flexible it'll only do basic charging if it's thick and durable it's because it's packing enough wiring to do power delivery, video etc, everything except probably Thunderbolt.

Usually they won't charge because they're not actually USB-C devices but are just broken and only pretend to be one (mostly due to missing resistors on CC lines, but there are other ways a device can be non-compliant too).

Yeah I have some devices that expect the manufacturer charger (I guess it's pre-negotiated to 19V or something) and I'm not even sure what was the point in giving it a USB C connector.

This is an acceptable failure mode. I'd be nice if there was a standardized LED flash or color that you could get so if your relative said something isn't working, you could ask, "Is it flashing three times?" or whatever.

The alternative is barrel connectors. If you plug in the wrong one, there's a decent chance that it a) won't work, or b) never work again.

Yeah maybe USB-D will get it right. But probably not. I had such high hopes for USB-C. Now I keep a couple USB-C to USB-A adapters lying around to force the charger (which is just a normal home outlet with a couple built-in USB-C ports) to speak old school USB-A charging instead of trying to negotiate PD with a shitty device that did not implement USB-C correctly.

Yes that's the fault of the manufacturer. But the wildly flexible spec for USB-C let it happen.

I wish there are easy ways to figure out the maximum current and wattage supported by a cable. So many cables don't label themselves except on the box!