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.”

  • wheeldawg@sh.itjust.works
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    3 months ago

    I’m not sure what the point is here. C is symmetrical and has absolutely no downsides, so yes, it’s objectively better.

  • Crow@lemmy.blahaj.zone
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    3 months ago

    I read the Wikipedia a little and apparently A to A cables can damage your devices, and the ones that do exist are for specific purposes and should only be used in those specific scenarios, and often they are more than just cables and have some computational stuff inside them

  • hperrin@lemmy.world
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    3 months ago

    USB-A male to USB-A male is not in any USB standard (not entirely true, but compliant cables are very rare and don’t connect voltage), and if you plug it into a device it’s not meant for, the behavior is entirely unspecified. It will probably do nothing. But it might fry your USB controller that is not expecting to receive voltage.

    USB-C to USB-C is in the spec, and if you plug in two host devices, they won’t hurt each other. You can actually charge a host device over USB-C, unlike USB-A.

    That’s why it isn’t ok. It’s not the same thing, it’s not in the standard, and it can even be dangerous (to the device).

  • StaySquared@lemmy.ml
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    3 months ago

    It is a fact that USB-C is superior. Right off the bat, no more guessing if the end of the cable is facing correctly to be inserted into a port. My patience would quickly wear thin when I’d have to flip it around 3-4 times to finally insert it.

    • PM_Your_Nudes_Please@lemmy.world
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      3 months ago

      The joke is that USB-A shouldn’t be paired with another USB-A. It should be using a USB-B on the other end. USB-A to USB-A could potentially be damaging, as both devices will expect to be providing power. USB-B denotes that a device is “receiving” USB, not “sending” it.

    • JustCopyingOthers@lemmy.ml
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      3 months ago

      USB-C is an absolute shit-show. Half a dozen types of identical looking cables all with different performance and compatability. They can be power only, USB-2 only, USB 3, 3.1, 5gb, 10gb. Some can carry 5A, others only 3A. Some may support thunderbolt. Cable sellers and manufacturers can/will claim anything.

      For people selling USB-C devices it’s a massive support problem. It looks like the device is defective, but someone may just have swapped out the cable for their phone charger cable and there’s no way of telling.

      • StaySquared@lemmy.ml
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        3 months ago

        Hm… I’ve honestly never experienced an issue with USC-C cables. I’m not saying they’re perfect but in my personal experience, I feel as they’re superior. Granted the USB-C cables I use are for my MacBooks and two of my mice.

  • ShankShill@sh.itjust.works
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    3 months ago

    I actually found an A to A cable in my Big Box of Cables I Might Need One Day™ when trying to flash my Gotek floppy emulator with FlashFloppy firmware.

  • Ekky@sopuli.xyz
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    3 months ago

    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?

    • NeatNit@discuss.tchncs.de
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      3 months ago

      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.

  • MinekPo1 [She/Her]@lemmygrad.ml
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    3 months ago

    actually they would be correct :

    USB began as a protocol where one side (USB-A) takes the leading role and the other (USB-B) the following role . this was mandated by hardware with differently shaped plugs and ports . this made sense for the time as USB was ment to connect computers to peripherals .

    however some devices don’t fit this binary that well : one might want to connect their phone to their computer to pull data off it , but they also might want to connect a keyboard to it , with the small form factor not allowing for both a USB-A and USB-B port. the solution was USB On-The-Go : USB Mini-A/B/AB and USB Micro-A/B/AB connectors have an additional pin which allows both modes of operations

    with USB-C , aside from adding more pins and making the connector rotationally symmetric , a very similar yet differently named feature was included , since USB-C - USB-C connections were planed for

    so yeah USB-A to USB-A connections are explicitly not allowed , for a similar reason as you only see CEE 7 (fine , or the objectively worse NEMA) plugs on both ends of a cable only in joke made cables . USB-C has additional hardware to support both sides using USB-C which USB-A , neither in the original or 3.0 revision , has .

    • tetris11@lemmy.ml
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      3 months ago

      With USB-C isn’t there still a slave-master dynamic that is now negotiated via software rather than hardware?

      • sparkle@lemm.ee
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        3 months ago

        a slave-master dynamic

        please don’t use that term, every time i see it i immediately verge on orgasming. you’ve already made me ruin 2 undergarments today. i have a serious bdsm kink and this is not funny.

    • sparkle@lemm.ee
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      3 months ago

      Yea but it’s inefficient. USB-A has a significantly lower transfer rate than USB-C so it’ll bottleneck