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Why aren't motherboards mostly USB-C by now? (2021)

philip.greenspun.com

111–120 of 511 posts

Re: Why aren't motherboards mostly USB-C by now? (2021)

#111
post #98

Earlier quoted context omitted.

My pixel slate has a USB-C port that will only charge in one orientation.

That sounds like it's either broken or there's some dust or lint in the plug/cable. Google is usually pretty good about their USB-C implementations.

might be a cheap cable.

Re: Why aren't motherboards mostly USB-C by now? (2021)

#112

A lot of devices don't need what USB-C offers: USB-A is a concurrent, not legacy, standard. You want USB-C for high-power, high-transfer-speed connections. An incredible number of peripherals don't need either of those things, connecting them with USB-C just makes no sense.

"No sense" seems like a strong claim. USB-C is a better plug (reversible, durable). I don't know how much more expensive USB-C might be, but considering the number of cheapo devices that come with an unwanted cable with at least one (often 2) USB-C ends, I assume it's not all that high.

The main use I encounter where USB-A is actually better are dongles that don't stick out.

Re: Why aren't motherboards mostly USB-C by now? (2021)

#113
post #77
post #69

Earlier quoted context omitted.

> There's no technical reasons for those to be USB A, and the USB C ones work great. There's a good technical reason for keyboards and mice to still be USB A: adapters from USB A socket to USB C plug are allowed by the standard, but adapters from USB C socket to USB A plug are forbidden (because they would, together with a common USB C cable, allow creating the forbidden USB A to USB A cable). This means that USB A k…

>because they would, together with a common USB C cable, allow creating the forbidden USB A to USB A cable Not hard to do this regardless. Amazon sells A-to-A cables[0]; and Unicomp keyboards for example have a USB-A port in the back, and connect to PCs with a bundled A-to-A cable. Seems like preventing this is a lost cause. [0] https://www.amazon.com/Monoprice-1-5ft-24AWG-Cable-Plated/dp...

I have more USB switches and kvms that do a-a instead of a-b than I care to admit

Re: Why aren't motherboards mostly USB-C by now? (2021)

#114

Earlier quoted context omitted.

USB-C is simply more convenient to use, and you get it right 100% of the time, instead of your orientation being wrong 50% of the time with USB-A.

Typically I get it wrong 100% of the time, i.e. I was in the right orientation but misaligned so it does not work, so I flip it, fails again, and then I swear and flip it a second time.

Indeed, USB superposition strikes again. Image:

https://global.discourse-cdn.com/boingboing/original/4X/9/6/...

Re: Why aren't motherboards mostly USB-C by now? (2021)

#115
post #3

calling USB A “legacy” and a “relic” is so misplaced. we all still own USB A devices. I challenge the author to go find a wired keyboard or mouse that comes with a USB C plug. it’s possible, but not easy. the thing is, we could just have both! this isn’t some winner/loser scenario. the real question should be why these computers with enough bandwidth for 11+ connectors don’t at least split the difference with 6/5 of…

Weirdly, the port on a cheap mechanical keyboard I have is USB-C but the cable they packaged is USB-C -> USB-A instead. They likely didn't package C->C because of the chicken and egg problem. Not everyone has enough Type-C ports.

Mine, a fairly budget mechanical keyboard, came with a C-C cable, but includes a small C to A adapter.

Re: Why aren't motherboards mostly USB-C by now? (2021)

#116
post #63

Earlier quoted context omitted.

http://codekeyboards.com are currently USB C as are https://www.wasdkeyboards.com

Note that these are keyboards and not mouses, and they have USB-C sockets rather than permanently attached cables with USB-C plugs. They are also very premium products. When it comes to the entire ecosystem, a $5 bargain-bin noname OEM keyboard with permanently-attached cable is more representative - and those definitely don't come with USB-C yet. That would probably add a few cents to their BOM, so it simply isn't w…

To be fair I'd much rather us converge to 'sockets on both ends' now that the plug is the same anyway

Throwing away a perfectly good device because the cable is kaputz exacerbates our e-waste problem

Re: Why aren't motherboards mostly USB-C by now? (2021)

#117
post #89
post #67

Earlier quoted context omitted.

Just don't accidentally stick USB-C into a USB-A port. It will fit and it will short the port, causing the machine to crash. Speaking from experience...

Sometimes I look at USB-C plugs and US power outlets and wonder if there’s a shock hazard there…

Once when I boarded a flight I noticed one of those multi-country mains power sockets next to a 2-hole headphone socket. They were arranged and aligned in a way that made it obvious that a 2-prong headphone cable would fit in the power socket. I took a picture of it and put it on Facebook before taking off.

After a nap I actually did put on headphones and plug them into the power socket by mistake. Luckily nothing happened.

Re: Why aren't motherboards mostly USB-C by now? (2021)

#118
post #3

calling USB A “legacy” and a “relic” is so misplaced. we all still own USB A devices. I challenge the author to go find a wired keyboard or mouse that comes with a USB C plug. it’s possible, but not easy. the thing is, we could just have both! this isn’t some winner/loser scenario. the real question should be why these computers with enough bandwidth for 11+ connectors don’t at least split the difference with 6/5 of…

Almost all of the dozen keyboards I’ve bought on the last few years are USB-C.

Re: Why aren't motherboards mostly USB-C by now? (2021)

#119
post #74

Earlier quoted context omitted.

Maybe it's a chicken and egg thing, but why do we still have usb-a keyboards and mice and thumb drives? wouldn't it make more sense for them all to be usb-c?

Having them be USB C would mean they could only be used on USB C ports (adapters from USB C socket to USB A plug are forbidden by the USB standard, because they would allow creating the forbidden USB A to USB A cable), while having them be USB A allows them to be used on both USB A ports and (with a simple passive adapter) USB C ports.

> forbidden USB A to USB A cable

In the early days of USB before flash drives were common, I was convinced such a cable would let me connect two PCs together to transfer data. Spent some time looking around in stores before a kind sales rep advised they did not exist.

Re: Why aren't motherboards mostly USB-C by now? (2021)

#120
It's very easy to bodge together a USB-A connector in a pinch in a way that USB-C just isn't. USB-A is simple and there's literally tens of billions of devices that would be made just a little bit closer to being e-waste if USB-A ports became substantially less common than they already are on mainstream devices. Adapters exist and should exist, but we shouldn't have to rely on them.
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