cross-posted from: https://lemmy.cringecollective.io/post/75583

why isn’t it ok? why???

Meme “the number of people who think this is an abomination” over a photo of a USB-A to USB-A cable, “but think this is perfectly acceptable” over a photo of a USB-C to USB-C cable, “makes me sick.”

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.

I had to look up, USB PD does work with a USB A port.

That being said, I personally want to get to a single type of cable so any I get can be spares for anything I have, so I like USB c to be all around.

That ALSO being said, I doubt I will ever get to all USB C.

Side note, USB PD is awesome because I know it can do up to 240w. (Last I knew.) That is 48v at 5a, so I am not sure what they can do to squeeze out more wattage.

USB PD is not specced for USB-A which is limited to 5V 2.4A. They had Quick Charge back in the day that got a little bit higher power using 9V but all the modern higher voltage high current PD stuff uses USB-C. The USB-A cables aren’t specced to be running 5A or more that PD uses.

https://www.usb.org/usb-charger-pd

C-C carries more power than A-C?

Yes, USB-A is only spec’ed for 5v 2.4a, so it will end up throttling the USB-C end which has higher power delivery specs.

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.

We peaked at USB mini B.

As it being disgusting or great?

Objectively disgusting. How can one connector be so chunky while still being asymmetric?

Huh, I’m not sure they are comparable.

Didn’t USB A and USB B use a master-slave relationship in which the male would (generally) always be the slave, whereas USB C uses agreement and discussion to decide the master and slave roles regardless of connector gender.

Please do correct me if I’m wrong. Also, do we say “agent” now instead of “slave”, or what is the new term?

I think reusing server/client naming for USB connectivity instead of master/slave would fit it

master/slave could be primary/secondary, primary/subordinate or principle/agent, so you’re correct on that replacement.

I personally am a big fan of “Mantrap” becoming an “Access Control Vestibule” mostly because it’s fun to say.

I like controller/peripheral, which is the most descriptive in my opinion. That’s what’s commonly used for SPI.

I’ve been using parent/child, I guess that’s not always correct?

I believe the common terms now are “domme” and “sub”

I can’t tell if this is real life or sarcasm…

Did I really miss the memo on this one?

No that’s the lingo the professionals use these days

I’m going to refer to myself as USB-B from now on

Yeah we’ve been going by primary-secondary where I am for the just 6 to 7 years now but I don’t think a universally agreed replacement for the terms exists yet.

Both ends of a USB cable are generally male (unless you’re talking about an extender). Generally the type B end (in mini, micro, or full configuration) would be the client though I have seen a couple of clients use Mini or Micro A.

Mechanics are still trying to figure that out with the “master cylinder” and “slave cylinder”

In the usb world its “host” and “device”, not “master” and “slave”.
But yes you are right

I think the biggest problem I see with A to A is: who’s delivering power, and who’s receiving it? Maybe if you use it only with the device it came with then it’ll be fine, but if anyone tries to just hook up that cable to two random computers, it might actually cause a short circuit and fry something.

Whereas Type-C was explicitly made to handle such situations.

Or a shorter reason: Type-C cable is allowed by the spec while Type-A is not.

Hrm. I have a keyboard that requires an A to A cable and I think it works with the cable any way around…

Might be wrong.

It makes sense, if I remember correctly the older USB cable (i.e. everything before Type-C) are passive, so as long as the pins are wired symmetrically it wouldn’t matter which side is which. But whoever made your keyboard really blundered, there is no reason in the world why anyone would do this. There’s so many options: the B connector, mini USB, micro USB. All would make sense to put in the keyboard. A just doesn’t.

Let me guess: you got it from an ultra cheap online store? AliExpress/Wish/Temu?

I’ve actually used this to my advantage. I bought some cheap speaker/light combos which basically made the lights dance to the music. The only power connector was a wire that comes straight out of the device and into an outlet. But it did have a USB port for loading music from a USB stick. So naturally I plugged one side of a USB A into the port and the other side into a power bank and it just straight up worked.

In the long, long ago, we used to use USB-A to A cables to transfer customers’ Mac OS X user profiles when they would buy a new Mac. Also worked with Target Disk Mode, way back when.

I only remember doing this with FireWire. Which model supported target disk mode over USB-A?

Ha, old man brain glitching there. The A to A cable we used for file migration, but we had to stick an A to C adapter on one end to use TDM on some machines (had to be USB 3 rated, I think). It was around 2016, if I remember correctly? It honestly didn’t come up that often.

Apple didn’t use FireWire for that?

They did, but the first run of MacBooks we got that didn’t have Firewire would let you use USB. But we needed an A to C adapter to make that work.

I actually thought this was about rolling up cables: circling on the top and over-under at the bottom

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