Re: USB Extension Cable

From	Alan Baker <alangbaker@telus.net>
Newsgroups	comp.sys.mac.system
Subject	Re: USB Extension Cable
Date	2017-04-06 15:46 -0700
Organization	Datemas.de http://www.news.datemas.de
Message-ID	<oc6gh3$lpb$1@news.datemas.de> (permalink)
References	(1 earlier) <1n3ycci.6uq60d1lkj2dfN%dempson@actrix.gen.nz> <58e323ef$0$10178$c3e8da3$e408f015@news.astraweb.com> <oc5nhu$gfd$1@dont-email.me> <oc5q4g$ouq$1@news.albasani.net> <oc68bu$gfd$2@dont-email.me>

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On 2017-04-06 1:31 PM, Don Bruder wrote:
> In article <oc5q4g$ouq$1@news.albasani.net>,
>  Wade Garrett <wade@cooler.net> wrote:
>
>> On 4/6/17 11:44 AM, Don Bruder wrote:
>>> In article <58e323ef$0$10178$c3e8da3$e408f015@news.astraweb.com>,
>>>  JF Mezei <jfmezei.spamnot@vaxination.ca> wrote:
>>>
>>>> On 2017-04-03 18:18, David Empson wrote:
>>>>
>>>>> Officially, USB extension cables are disallowed by the standard.
>>>>
>>>> You've explained in the past why this is the case for USB-3/USB-C
>>>>
>>>> However, in the days of USB-2, were they disallowed?
>>>>
>>>> They were quite easy to get from any electroncis store and I got one
>>>> with a bluetooth-USB dongle so it could be above my desk (the MacPro
>>>> 2009 built-in bluetooth wouldn't reach my mouse).
>>>
>>> "Extension cables" have been explicitly disallowed by the standard since
>>> the very beginning of USB.
>>>
>>> While it's true that you can get a cable that wires together a male USB
>>> "A" plug on one end and a female USB "A" socket on the other end and
>>> calls itself a "USB extension cable" from damn near anywhere, the
>>> standard specifically states that such an assembly *IS NOT* a "USB"
>>> cable, will not even be considered for testing/USB certification, and is
>>> expressly forbidden to be called a "USB" anything. Selling such a cable
>>> as a "USB" anything without the USB group's approval is also a
>>> trademark/patent/copyright/licensing/similar violation.
>>>
>>
>> That's nice, but all that really matters is does it work or not;-)
>
> Which is one of the primary reasons for such beasts being verboten - The
> only answer that can be given is "It *MIGHT*". The organization that
> controls USB certification is adamant about the concept that "If it's
> USB, it *WILL* work - full-stop." Hence, nothing they don't approve is
> legally "USB". You might be able to plug USB stuff into it, but without
> their seal of approval, it's not USB, not standard-compliant, and might
> or might not function if it's put in a USB chain. If it does, bully for
> you. If not, it's a case of "Tough shit. You were warned."
>
> For the record, I'm not so dogmatic that I won't use things like an
> extension cable if the need arises. It SHOULD work. It may not. If it
> does, great. If not, my own stupid for doing it. Unfortunately, there
> are far too many dipshits out there who are more than willing to try
> connecting a couple of USB devices together using a piece of hay twine
> and some bubble-gum, then pitching a bitch and filing (or at least
> trying to file) a lawsuit because it didn't work the way they hoped it
> would.
>

Sorry, Don, but I'm having a lot of trouble buying the claim that 
extension cables are disallowed by the spec.

Got anything authoritative on point?

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Thread

USB Extension Cable Wade Garrett <wade@cooler.net> - 2017-04-03 18:02 -0400
  Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-03 18:05 -0400
    Re: USB Extension Cable Jolly Roger <jollyroger@pobox.com> - 2017-04-04 15:36 +0000
      Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-04 11:50 -0400
        Re: USB Extension Cable Jolly Roger <jollyroger@pobox.com> - 2017-04-04 16:17 +0000
          Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-07 03:37 +0000
            Re: USB Extension Cable Jolly Roger <jollyroger@pobox.com> - 2017-04-07 03:52 +0000
              Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-07 21:37 +0000
                Re: USB Extension Cable Jolly Roger <jollyroger@pobox.com> - 2017-04-07 22:57 +0000
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 19:59 -0400
                Re: USB Extension Cable Jolly Roger <jollyroger@pobox.com> - 2017-04-08 00:03 +0000
                Re: USB Extension Cable henry999@eircom.net (Henry) - 2017-04-11 16:06 +0300
                Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-08 13:55 +0000
                Re: USB Extension Cable Jolly Roger <jollyroger@pobox.com> - 2017-04-08 14:42 +0000
                Re: USB Extension Cable JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-04-08 14:02 -0400
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-08 14:21 -0400
                Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-09 14:14 +0000
  Re: USB Extension Cable dempson@actrix.gen.nz (David Empson) - 2017-04-04 10:18 +1200
    Re: USB Extension Cable JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-04-04 00:41 -0400
      Re: USB Extension Cable dempson@actrix.gen.nz (David Empson) - 2017-04-04 16:52 +1200
        Re: USB Extension Cable JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-04-04 13:16 -0400
          Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-04 13:25 -0400
      Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-04 00:55 -0400
      Re: USB Extension Cable Don Bruder <Don@sonic.net> - 2017-04-06 08:44 -0700
        Re: USB Extension Cable Wade Garrett <wade@cooler.net> - 2017-04-06 12:24 -0400
          Re: USB Extension Cable Don Bruder <Don@sonic.net> - 2017-04-06 13:31 -0700
            Re: USB Extension Cable Alan Baker <alangbaker@telus.net> - 2017-04-06 15:46 -0700
              Re: USB Extension Cable dempson@actrix.gen.nz (David Empson) - 2017-04-07 10:57 +1200
                Re: USB Extension Cable moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-07 17:49 +0000
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 14:02 -0400
                Re: USB Extension Cable JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-04-07 16:19 -0400
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 16:36 -0400
                Re: USB Extension Cable Nelson <nelson@nowhere.com> - 2017-04-08 04:57 -0400
                Re: USB Extension Cable moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-07 20:46 +0000
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 16:48 -0400
                Re: USB Extension Cable moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-08 01:47 +0000
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 21:58 -0400
                Re: USB Extension Cable moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-08 16:48 +0000
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-08 13:04 -0400
                Re: USB Extension Cable Don Bruder <Don@sonic.net> - 2017-04-07 20:37 -0700
                Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 23:48 -0400
                Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-08 13:59 +0000
              Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-06 19:47 -0400
              Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-07 03:40 +0000
              Re: USB Extension Cable Don Bruder <Don@sonic.net> - 2017-04-07 17:49 -0700
  Re: USB Extension Cable John Albert <j.albert@snet.net> - 2017-04-03 23:32 -0400
    Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-03 23:40 -0400
  Re: USB Extension Cable Wade Garrett <wade@cooler.net> - 2017-04-04 09:20 -0400
  Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-07 03:34 +0000
    Re: USB Extension Cable Alan Baker <alangbaker@telus.net> - 2017-04-07 12:17 -0700
      Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 15:45 -0400
        Re: USB Extension Cable JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-04-07 16:26 -0400
          Re: USB Extension Cable nospam <nospam@nospam.invalid> - 2017-04-07 16:36 -0400
      Re: USB Extension Cable Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-04-07 21:35 +0000

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