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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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      Replying to @marcan42 @mgrviper

      It was only introduced wth 3.1. 3.0 didn't rebrand 2.0 ports, nor did 2.0 rebrand 1.1 ports.

      1 reply 0 retweets 0 likes
    2. Hector Martin‏ @marcan42 27 Feb 2019
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      Replying to @DrPizza @mgrviper

      Not ports, but yes devices! 2.0 devices can be low-speed, as I just demonstrated with my mouse (and the 2003 Ars article). 3.1 and 3.2 don't rebrand ports either; nobody is going to call a port that can't do Gen2 "3.1".

      1 reply 0 retweets 0 likes
    3. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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      Replying to @marcan42 @mgrviper

      That's exactly what they do.

      2 replies 0 retweets 0 likes
    4. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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      Replying to @DrPizza @marcan42 @mgrviper

      And if you're a hardware vendor trying to make your old gear more appealing, why wouldn't you? It is a 3.1 port! Just only capable of generation 1 speeds...

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 27 Feb 2019
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      Replying to @DrPizza @mgrviper

      But they could already do this with 2.0... it's literally the same exact situation.

      1 reply 0 retweets 0 likes
    6. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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      Replying to @marcan42 @mgrviper

      No it couldn't. A 2.0 port is not any generation of 3.0.

      1 reply 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 27 Feb 2019
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      Replying to @DrPizza @mgrviper

      A 2.0 device might only support full speed or low speed (introduced in 1.1), which is what I've been trying to explain all along. Just like a 3.2 device might only support 10Gbps (introduced in 3.1) or 5Gbps (introduced in 3.0).

      1 reply 0 retweets 0 likes
    8. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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      Replying to @marcan42 @mgrviper

      That didn't happen. Nobody labelled their 1.1 ports 2.0.

      1 reply 0 retweets 0 likes
    9. Hector Martin‏ @marcan42 27 Feb 2019
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      Replying to @DrPizza @mgrviper

      So what you're saying is implementors found a new way to mislead users. How is that USB-IF's fault?

      1 reply 0 retweets 0 likes
    10. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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      Replying to @marcan42 @mgrviper

      Because USB-IF is the one saying that 3.0 is in fact 3.1. And 3.2.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 27 Feb 2019
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      Replying to @DrPizza @mgrviper

      Just like they said 2.0 low speed was 1.1 low speed. Seriously, this is the. Exact. Same. Situation.

      6:07 AM - 27 Feb 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        1. Pumpkin Fright 👨‍⚕️ 🍕‏ @DrPizza 27 Feb 2019
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          Replying to @marcan42 @mgrviper

          Nah. There is no "2.0 gen 1" that means in fact "1.1". Every 2.0 port can operate at 480Mb/s.

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 27 Feb 2019
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          Replying to @DrPizza @mgrviper

          You still haven't shown me an example of a host port labeled 3.1 that only does Gen1, and I've shown you examples of USB2.0 devices that only do 1.5mbps.

          0 replies 0 retweets 0 likes
          3. End of conversation

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