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EU law mandating universal chargers for devices comes into force
(www.france24.com)
This is a most excellent place for technology news and articles.
The benefit is that by being standardized, there will be less proprietary cords and adapters. And the capability of USB-C should be adequate for sometime with the power and data transfer.
One issue, is that not all USBC cords are of the same quality. I found this recently when trying to find a cord that can be used for an external SSD, and video for a monitor. Some cords worked, the rest did not. All the cords could be used for charging, but after that, all bets are off.
The problem is that USB-C is a plug not a standard even in charging some cables won't do as much power as others (though at least they communicate that to the power source).
I do however fully support the total USB-C rollout. In my everyday carry there's now only one plug (2 USB-C one USB-A) and some cables that I can charge everything with, my laptop, my phone my Powerbank and even those few devices that are still USB-B micro (I just carry one USB-A to micro cable).
I bought a really nice, high quality, very fast charging and data transfer cable, and there's one device I own that it will not charge at all. My assumption is that it probably doesn't have a charging control chip or something else required to work with that cable. It doesn't work with any other USB-C to C cables I own either. It has to be charged with the USB-A to C cables included in the box
Likewise, I have a speaker thing (w-king brand) that will only charge off USB A to C, and will not charge off any USB C power supply
The cable that comes with the original Nintendo switch is weird. Point blank will not charge things except the switch, I have no idea why Nintendo would care to limited like that.