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== Use of SCSI Command Set by USB ==
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{{high traffic|date=28 May 2015|url=http://mobile.slashdot.org/story/15/05/28/1838208/android-m-to-embrace-usb-type-c-and-midi|site=Slashdot}}
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|from1=Universal Serial Bus |destination1=USB|result1=Moved|date1=22 June 2011|link1=Talk:USB/Archive 7#Requested move 2011
|from2=USB |destination2=Universal Serial Bus|result2=Moved|date2=14 January 2012|link2=Talk:USB/Archive 8#Requested move 2012
|from3=Universal Serial Bus |destination3=USB|result3=Moved|date3=25 June 2013|link3=Talk:USB/Archive 7#Requested move 2013
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{{Merged-from|Device Firmware Upgrade‎|date=September 8, 2014}}
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== File:USB 2022 September naming scheme.svg ==
Q: I think it would be useful to mention that USB uses the SCSI command set, despite adopting a different physical architecture. This is actually highlighted in the ] article. As the current article stands SCSI and USB seem like completely unrelated technologies. ] 08:50, 20 Aug 2004 (UTC)


This graph has some faults and is misleading. For example for the following aspects:
A: See ] of SCSI over USB.


*Generally mismatches/simplifies operation modes with specification version
== Can someone please explain usb cable types ==
*USB4 defines many more operation modes
*'USB4 20Gbps' does not exist as an operation mode
*USB4 2x2 is not interchangeable with USB 3.2 2x2 as indicated by the logo
*logos for USB 3.x and USB4 are different
] (]) 18:55, 22 July 2023 (UTC)


{{reply to|ZH8000}}
I know there are at least two and maybe more types of cables
:1. & 2. This table was made with consumers in mind, i.e. it tries to alleviate the confusion (for which simplifications have to be made) of previous marketing name schemes (often still being used, despite the newer recommendation for the names https://web.archive.org/web/20230510092046/https://usb.org/sites/default/files/usb_data_performance_language_usage_guidelines_september_2022.pdf and https://www.usb.org/sites/default/files/usb-if_integrators_list_marketing_name_guidance_january_2023.pdf) so that the consumer can understand what they are paying for (e.g., when comparing different smartphone models). It wasn't meant to be a detailed table, e.g., containing all operation modes for USB4, only meant to contain the names/logos that can often be seen in media/print. Maybe moving the table with the paragraph to another place in the article could make the designated use clearer.
for USB - Could someone differentiate them? Is one type
:3. If you search for USB4 20gbps, you will find some product descriptions mentioning it. Also, I got those marketing names from https://www.usb.org/sites/default/files/usb4_language_product_and_packaging_guidelines_final__0.pdf . That means I had to include somehow this certain name.
of plug/cable for USB 1 and another for USB 2? Or does the
:4. As in the recommendation from https://web.archive.org/web/20230510092046/https://usb.org/sites/default/files/usb_data_performance_language_usage_guidelines_september_2022.pdf , it is stated that for reduced confusion, clear communication of the performance signaling that a product delivers is important. So I (perhaps wrongly) decided to use 1 logo, so that it would be the most up-to-date. By my understanding (might be wrong, but as this whole thing is a big mess without concise, clear and up-to-date info, it's all I can muster) USB4 2x2 and USB 3.2 2x2 won't have separate logos, but will be marked by the same logo.
cable/plug type not matter? I know they are compatible,
:5. The logos used are packaging logos, from https://www.usb.org/sites/default/files/usb-if_usb_performance_logo_usage_guidelines_final_20230320.pdf . If there are any more up-to-date/correct logos, please link their high quality version in the reply to this comment (preferably from official source).
does one cable/plug limit the bandwidth?
:If there are still some things needing to be changed, the best result that can arise from this discussion would be bullet points that describe where & what to change to what (with sources by which the need for the change is based on).
:Cheers ^^ ] (]) 08:49, 12 November 2023 (UTC)


{{Help me-helped}}
I have tried to find this on the internet but my searches
Need advice whether I can now remove the disputed warning template from the table. I explained the reason for the table being as it is, but I am not getting any replies/counterarguments/tips on changing the table.
only turn up vendors trying to sell stuff - it is overwhelming.
] (]) 14:14, 19 November 2023 (UTC)
: Helpers alerted by the {{tl|help me}} template are not going to weigh in on content issues. It's up to you to determine whether a sufficient consensus exists for what you wish to implement. If you are not getting enough response here on this talk page, the next place to go is usually to the talk page of one of the WikiProjects whose banners appear at the top of the page. After that , it might appropriate to open an ] - but sometimes it's best to go ahead and make the change and see if that smokes out some responses from other editors. You could even include a phrase like "seeing no objections on the talk page..." as part of your edit summary. ''']<sup><small>]&nbsp;]</small></sup>''' 19:29, 19 November 2023 (UTC)


== Hubs and Respectively ==
Could someone please research this and maybe even put pictures
of the USB plug types up on the page?


On 30 October, an edit was made (Revision as of 13:46, 30 October 2023) to insert "hubs" as an additional type of device to which USB connections can be made, making three types. Unfortunately the article now reads:
Oh, and I know that a USB 1 hub would have to be replaced to
handle the bandwidth of USB 2, but I do not know if the cables
make a difference.


... Type-A (upstream) and Type-B (downstream) connectors, found on <nowiki>''</nowiki>hosts<nowiki>''</nowiki><ins>, <nowiki>''hubs''</nowiki>,</ins> and <nowiki>''</nowiki><ins>peripheral </ins>devices<nowiki>''</nowiki>, respectively, ...
----
''The link to the USB.ORG site includes access to the specs for cables which include pictures (drawings). The A end hooks to the host and the B end hooks to the device. As noted above, in the extension called On-the-go, there is also a hermaphroditic socket which will accept either the A or the B end of the mini-version of the standard cables.


So "respectively" is ambiguous. "hosts" goes with Type-A, and "peripheral devices" goes with Type-B. "hubs" goes with ??? Rather than fixing it myself, I would prefer that the edtitor do it. Frankly, I don't see any good reason for complicating the issue by introducing "hubs." ] (]) 19:50, 18 November 2023 (UTC)
There is no plug/socket change for High speed (480Mpbs) but the cable spec was tightened in the 2.0 version to allow for the higher transfer rates. A 1.1 Spec. hub will work on a 2.0 system but will limit the maximum speed of any down-stream devices to 12Mbps regardless of whether the downstream devices are High-speed capable or not. - richard''


:No, all three kinds of devices are part of the specification, you can not remove one of them. I removed the 'respectively' term. -- ] (]) 20:40, 18 November 2023 (UTC)
== USB 2 HS vs. FireWire ==
::That's definitely an improvement. According to USB 3.1 and 3.2, "USB device" covers both "hubs" and "peripheral devices," so it is still possible to remove "hubs," but the bigger problem is now gone so thanks for that and your other work. ] (]) 01:49, 19 November 2023 (UTC)


== Removed a broken source from article page. ==
I would like to comment on USB2.0 being in direct competition with IEEE 1394. Here are a list of features that makes then resolutely different:


I just made an edit removing a broken source link. Hope that was good one? ] (]) 21:02, 2 January 2024 (UTC)
===Application domain===
*USB addresses needs for a wide range of devices (mouse, keyboard, modem, hard disk drives, scanner, printer...) that do not exist in IEEE 1394.
*IEEE 1394 addresses needs of audio-video devices such as videorecorder, digital camera that have no real equivalent on USB.


== "Fabrics" has no place following "USB-C" ==
''USB's isochronous mode does apply to streaming devices including videorecorders and audio devices such as speakers, microphones, etc. The High-speed (480Mbps) use of isochronous is directly comparable to use of IEEE 1394/Firewire for these devices - richard''


I have not seen "Fabrics" stated following USB-C in any of the cited articles. If I'm missing something, whoever entered or approved that insertion has to support it, because it makes no logical sense. User 194.230.148.168 has undone my deletion of that word in this context, stating "Read the Specs": which specs has not been cited that makes this at all clear?--] (]) 20:52, 14 April 2024 (UTC)
===Communication paradigm===
:The citation contains "USB4 V2 with Errata and ECN through June 2023 - CLEAN.pdf" in the zip file (currently "USB4 V2 with Errata and ECN through September 2024- CLEAN.pdf" as the file has updated since then) both of which are official and contain "USB4 Fabric". Neither the article nor the source explain this usage of "fabric", and for readers of an encyclopedia (which is expected to be read by non-experts) should include an explanation or use more layman terms outside of the quotation taken from the standard. <!-- Template:Unsigned IP --><small class="autosigned">—&nbsp;Preceding ] comment added by ] (]) 04:57, 17 December 2024 (UTC)</small> <!--Autosigned by SineBot-->
*USB provides host to peripheral communication. A host computer is required in the system.
*IEEE 1394 provides non-centralized networking. You may build a network with simply a VCR and a TV tuner.


== Micro-A Remark ==
Sylvwild


On "Available connectors by USB standard", the 3.0, 3.1, and 3.2 Micro-A connector should have a Remark explaining the image is reversed from the others. ] (]) 04:13, 16 December 2024 (UTC)
''Yes, the system requres a host - but the USB On-the-go extension allows for the possibility of a unit that is usually used as a device to become a host for the purposes of a point to point conversation as you describe. The initial setup is determined by which end of the cable is plugged in to which unit but is switchable under software control so that the initial device may assume host and vice versa. The USB OTG sockets are hermaphroditic - can accept either the A or B end of the cable. - richard''


== Renaming == == Micro - B ==


https://www.moddiy.com/pages/USB-2.0-USB-3.0-USB-3.1-USB-3.2-USB-4.0-Connectors-and-Pinouts.html ( near bottom ) seems to have a diagram for this *COMMON* type of connector. Unfortunately, I do not own the work. Also, no scale. ] (]) 15:36, 25 December 2024 (UTC) . . . the existing diagram under 2.0 Revised ( column ) seems to be nearly the same, but stuff around the edges obscures the shape.
"Confusingly, the USB Forum has renamed USB 1.1 to USB 2.0 Full Speed; and USB 2.0 to USB 2.0 High Speed."

Huh? The USB Implementers Forum (is that what you meant?) still refers to USB 1.1 and USB 2.0. 1.5 Mbps has always been "low-speed" and 12 Mbps has always been "full-speed"; USB 2.0 added "high-speed".

Can we get a reference for this renaming?

== USB dates ==

"USB 1.0 came out in 1995" ... "USB 1.1 came out later in 1995" ... "USB 2.0 came out in 2002"

Huh?

The title page of the spec says: "Universal Serial Bus Specification; Compaq, Intel, Microsoft, NEC; Revision 1.1; September 23, 1998".

The USB 1.0 spec isn't still online, but the revision history in the front of the USB 1.1 spec lists 1.0 as being issued on January 15, 1996.

The USB-IF : "The Original USB 2.0 specification released on April 27, 2000". The title page of the spec says: "Revision 2.0, April 27, 2000".

I did some quick searches on Google, and other pages seem to confirm these dates; for example, .

Where did the dates in this article (1.0=1995, 1.1=1995, 2.0=2002) come from? Why are they not 1.0=1996, 1.1=1998, 2.0=2000?

Latest revision as of 15:42, 25 December 2024

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File:USB 2022 September naming scheme.svg

This graph has some faults and is misleading. For example for the following aspects:

  • Generally mismatches/simplifies operation modes with specification version
  • USB4 defines many more operation modes
  • 'USB4 20Gbps' does not exist as an operation mode
  • USB4 2x2 is not interchangeable with USB 3.2 2x2 as indicated by the logo
  • logos for USB 3.x and USB4 are different

ZH8000 (talk) 18:55, 22 July 2023 (UTC)

@ZH8000:

1. & 2. This table was made with consumers in mind, i.e. it tries to alleviate the confusion (for which simplifications have to be made) of previous marketing name schemes (often still being used, despite the newer recommendation for the names https://web.archive.org/web/20230510092046/https://usb.org/sites/default/files/usb_data_performance_language_usage_guidelines_september_2022.pdf and https://www.usb.org/sites/default/files/usb-if_integrators_list_marketing_name_guidance_january_2023.pdf) so that the consumer can understand what they are paying for (e.g., when comparing different smartphone models). It wasn't meant to be a detailed table, e.g., containing all operation modes for USB4, only meant to contain the names/logos that can often be seen in media/print. Maybe moving the table with the paragraph to another place in the article could make the designated use clearer.
3. If you search for USB4 20gbps, you will find some product descriptions mentioning it. Also, I got those marketing names from https://www.usb.org/sites/default/files/usb4_language_product_and_packaging_guidelines_final__0.pdf . That means I had to include somehow this certain name.
4. As in the recommendation from https://web.archive.org/web/20230510092046/https://usb.org/sites/default/files/usb_data_performance_language_usage_guidelines_september_2022.pdf , it is stated that for reduced confusion, clear communication of the performance signaling that a product delivers is important. So I (perhaps wrongly) decided to use 1 logo, so that it would be the most up-to-date. By my understanding (might be wrong, but as this whole thing is a big mess without concise, clear and up-to-date info, it's all I can muster) USB4 2x2 and USB 3.2 2x2 won't have separate logos, but will be marked by the same logo.
5. The logos used are packaging logos, from https://www.usb.org/sites/default/files/usb-if_usb_performance_logo_usage_guidelines_final_20230320.pdf . If there are any more up-to-date/correct logos, please link their high quality version in the reply to this comment (preferably from official source).
If there are still some things needing to be changed, the best result that can arise from this discussion would be bullet points that describe where & what to change to what (with sources by which the need for the change is based on).
Cheers ^^ GravityCore (talk) 08:49, 12 November 2023 (UTC)
check-markThis help request has been answered. If you need more help, you can ask another question on your talk page, contact the responding user(s) directly on their user talk page, or consider visiting the Teahouse.

Need advice whether I can now remove the disputed warning template from the table. I explained the reason for the table being as it is, but I am not getting any replies/counterarguments/tips on changing the table. GravityCore (talk) 14:14, 19 November 2023 (UTC)

Helpers alerted by the {{help me}} template are not going to weigh in on content issues. It's up to you to determine whether a sufficient consensus exists for what you wish to implement. If you are not getting enough response here on this talk page, the next place to go is usually to the talk page of one of the WikiProjects whose banners appear at the top of the page. After that , it might appropriate to open an RFC - but sometimes it's best to go ahead and make the change and see if that smokes out some responses from other editors. You could even include a phrase like "seeing no objections on the talk page..." as part of your edit summary. — jmcgnh 19:29, 19 November 2023 (UTC)

Hubs and Respectively

On 30 October, an edit was made (Revision as of 13:46, 30 October 2023) to insert "hubs" as an additional type of device to which USB connections can be made, making three types. Unfortunately the article now reads:

... Type-A (upstream) and Type-B (downstream) connectors, found on ''hosts'', ''hubs'', and ''peripheral devices'', respectively, ...

So "respectively" is ambiguous. "hosts" goes with Type-A, and "peripheral devices" goes with Type-B. "hubs" goes with ??? Rather than fixing it myself, I would prefer that the edtitor do it. Frankly, I don't see any good reason for complicating the issue by introducing "hubs." 47.184.152.29 (talk) 19:50, 18 November 2023 (UTC)

No, all three kinds of devices are part of the specification, you can not remove one of them. I removed the 'respectively' term. -- ZH8000 (talk) 20:40, 18 November 2023 (UTC)
That's definitely an improvement. According to USB 3.1 and 3.2, "USB device" covers both "hubs" and "peripheral devices," so it is still possible to remove "hubs," but the bigger problem is now gone so thanks for that and your other work. 47.184.152.29 (talk) 01:49, 19 November 2023 (UTC)

Removed a broken source from article page.

I just made an edit removing a broken source link. Hope that was good one? Olivia Harry (talk) 21:02, 2 January 2024 (UTC)

"Fabrics" has no place following "USB-C"

I have not seen "Fabrics" stated following USB-C in any of the cited articles. If I'm missing something, whoever entered or approved that insertion has to support it, because it makes no logical sense. User 194.230.148.168 has undone my deletion of that word in this context, stating "Read the Specs": which specs has not been cited that makes this at all clear?--Toolnut (talk) 20:52, 14 April 2024 (UTC)

The citation contains "USB4 V2 with Errata and ECN through June 2023 - CLEAN.pdf" in the zip file (currently "USB4 V2 with Errata and ECN through September 2024- CLEAN.pdf" as the file has updated since then) both of which are official and contain "USB4 Fabric". Neither the article nor the source explain this usage of "fabric", and for readers of an encyclopedia (which is expected to be read by non-experts) should include an explanation or use more layman terms outside of the quotation taken from the standard. — Preceding unsigned comment added by 2600:1700:2940:1DD0:0:0:0:2B (talk) 04:57, 17 December 2024 (UTC)

Micro-A Remark

On "Available connectors by USB standard", the 3.0, 3.1, and 3.2 Micro-A connector should have a Remark explaining the image is reversed from the others. 2600:1700:2940:1DD0:0:0:0:2B (talk) 04:13, 16 December 2024 (UTC)

Micro - B

https://www.moddiy.com/pages/USB-2.0-USB-3.0-USB-3.1-USB-3.2-USB-4.0-Connectors-and-Pinouts.html ( near bottom ) seems to have a diagram for this *COMMON* type of connector. Unfortunately, I do not own the work. Also, no scale. ShaReeLi (talk) 15:36, 25 December 2024 (UTC) . . . the existing diagram under 2.0 Revised ( column ) seems to be nearly the same, but stuff around the edges obscures the shape.

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