Editing USB (section)

=== USB 3.''x'' <span class="anchor" id="3.0"></span><span class="anchor" id="SS"></span><span class="anchor" id="3.x"></span>===
{{Main|USB 3.0}}
[[File:Certified SuperSpeed USB Logo.svg|thumb|upright=0.5|Deprecated SuperSpeed USB logo]]

The USB&nbsp;3.0 specification was released on 12 November 2008, with its management transferring from USB&nbsp;3.0 Promoter Group to the USB Implementers Forum (USB-IF) and announced on 17 November 2008 at the SuperSpeed USB Developers Conference.<ref name="ReferenceA">{{Cite press release | url= http://www.usb.org/press/USB-IF_Press_Releases/2008_11_17_USB_IF.pdf | title= USB 3.0 Specification Now Available | location= San Jose, Calif. | website = USB Implementers Forum | date= 17 November 2008 | access-date= 22 June 2010 | archive-url= https://web.archive.org/web/20100331035202/http://www.usb.org/press/USB-IF_Press_Releases/2008_11_17_USB_IF.pdf | archive-date= 31 March 2010}}</ref>

USB&nbsp;3.0 adds a new architecture and protocol named ''SuperSpeed'', with associated [[backward-compatible]] plugs, receptacles, and cables. SuperSpeed plugs and receptacles are identified with a distinct logo and blue inserts in standard format receptacles.

The SuperSpeed architecture provides for an operation mode at a rate of 5.0&nbsp;Gbit/s, in addition to the three existing operation modes. Its efficiency is dependent on a number of factors including physical symbol encoding and link-level overhead. At a 5&nbsp;Gbit/s signaling rate with [[8b/10b encoding]], each byte needs 10 bits to transmit, so the raw throughput is 500&nbsp;MB/s. When flow control, packet framing and protocol overhead are considered, it is realistic for about two-thirds of the raw throughput, or 330&nbsp;MB/s to transmit to an application.<ref name=USB30Spec/>{{rp|at=4–19}} SuperSpeed's architecture is [[full-duplex]]; all earlier implementations, USB 1.0-2.0, are all half-duplex, arbitrated by the host.<ref>{{cite web |url=http://www8.hp.com/h20195/v2/GetDocument.aspx?docname=4AA4-2724ENW |title=USB 3.0 Technology |year=2012 |access-date=2 January 2014 |publisher=[[Hewlett-Packard|HP]] |format=PDF |url-status=live |archive-url=https://web.archive.org/web/20150219151039/http://www8.hp.com/h20195/v2/GetDocument.aspx?docname=4AA4-2724ENW |archive-date=19 February 2015}}</ref>

Low-power and high-power devices remain operational with this standard, but devices implementing SuperSpeed can provide an increased current of between 150&nbsp;mA and 900&nbsp;mA, by discrete steps of 150&nbsp;mA.<ref name=USB30Spec/>{{rp|at=9–9}}

USB 3.0 also introduced the [[USB Attached SCSI|USB Attached SCSI Protocol (UASP)]], which provides generally faster transfer speeds than the BOT (Bulk-Only-Transfer) protocol.

[[USB 3.0#USB 3.1|USB&nbsp;3.1]],<ref name=USB31Spec/> released in July 2013 has two variants. The first one preserves USB&nbsp;3.0's ''SuperSpeed'' architecture and protocol and its operation mode is newly named ''USB&nbsp;3.1 Gen 1'',<ref name="USB 3.1 language usage 2015-05">{{cite web |date= 2015-05-28|title=USB 3.1 Specification Language Usage Guidelines from USB-IF |url=http://www.usb.org/developers/ssusb/USB_3_1_Language_Product_and_Packaging_Guidelines_FINAL.pdf  |publisher = USB Implementers Forum  |url-status=dead |archive-url=https://web.archive.org/web/20160312135950/http://www.usb.org/developers/ssusb/USB_3_1_Language_Product_and_Packaging_Guidelines_FINAL.pdf |archive-date=12 March 2016 }}</ref>
<ref name="USB 3.1 language usage 2018-08">{{cite web |author=<!-- not stated -->|date=2018-08-27 |title=USB 3.1 Specification Language Usage Guidelines from USB-IF |url=https://www.usb.org/sites/default/files/usb_3_1_language_product_and_packaging_guidelines_final_0.pdf |publisher=USB Implementers Forum |url-status=live |archive-url=https://web.archive.org/web/20190625163256/https://www.usb.org/sites/default/files/usb_3_1_language_product_and_packaging_guidelines_final_0.pdf|archive-date = 2019-06-25
|access-date=2025-04-02}}</ref><ref>{{cite web |url=https://www.msi.com/blog/usb-3-1-gen1-gen2-explained |title=USB 3.1 Gen 1 & Gen 2 explained |author=Silvia |website=www.msi.org |date=5 August 2015 |access-date=5 April 2018 |archive-date=8 July 2018 |archive-url=https://web.archive.org/web/20180708020201/https://www.msi.com/blog/usb-3-1-gen1-gen2-explained |url-status=live }}</ref> and the second version introduces a distinctively new ''SuperSpeedPlus'' architecture and protocol with a second operation mode named as ''USB&nbsp;3.1 Gen 2'' (marketed as ''SuperSpeed+ USB''). SuperSpeed+ doubles the maximum signaling rate to 10&nbsp;Gbit/s (later marketed as ''SuperSpeed USB 10&nbsp;Gbps'' by the USB&nbsp;3.2 specification), while reducing line encoding overhead to just 3% by changing the [[encoding scheme]] to [[128b/132b]].<ref name="USB 3.1 language usage 2015-05"/><ref>{{cite web |url=http://www.usb.org/developers/docs/usb_31_102214.zip |archive-url=https://web.archive.org/web/20141121225502/http://www.usb.org/developers/docs/usb_31_102214.zip |title=Universal Serial Bus 3.1 Specification |publisher=USB Implementers Forum |date=26 July 2013 |access-date=19 November 2014 |archive-date=21 November 2014 |via=Usb.org |format=ZIP}}</ref>

[[USB 3.0#USB 3.2|USB&nbsp;3.2]], released in September 2017,<ref name=USB32Spec>{{Cite web |url=https://www.usb.org/document-library/usb-32-specification-released-september-22-2017-and-ecns |title=The USB 3.2 Specification released on September 22, 2017 and ECNs |date=22 September 2017 |website=usb.org |access-date=4 September 2019 |archive-date=6 July 2019 |archive-url=https://web.archive.org/web/20190706231129/https://www.usb.org/document-library/usb-32-specification-released-september-22-2017-and-ecns|url-status=live}}</ref> preserves existing USB&nbsp;3.1 ''SuperSpeed'' and ''SuperSpeedPlus'' architectures and protocols and their respective operation modes, but introduces two additional ''SuperSpeedPlus'' operation modes (''USB&nbsp;3.2 Gen&nbsp;1×2'' and ''USB&nbsp;3.2 Gen&nbsp;2×2'') with the new [[USB-C]] Fabric with signaling rates of 10 and 20&nbsp;Gbit/s (raw data rates of 1212 and 2424&nbsp;MB/s). The increase in bandwidth is a result of two-lane operation over existing wires that were originally intended for flip-flop capabilities of the USB-C connector.<ref>{{Cite press release |url=http://www.usb.org/press/USB_3.2_PR_USB-IF_Final.pdf |title=USB 3.0 Promoter Group Announces USB 3.2 Update |date=25 July 2017 | website = USB Implementers Forum |location=Beaverton, Oregon, US |access-date=27 July 2017 |archive-date=21 September 2017 |archive-url=https://web.archive.org/web/20170921191940/http://www.usb.org/press/USB_3.2_PR_USB-IF_Final.pdf |url-status=live}}</ref>

==== Naming scheme ====
Starting with the USB 3.2 specification, USB-IF introduced a new naming scheme.<ref name="USB 3.2 language usage 2018-10">{{Cite web|url=https://www.usb.org/sites/default/files/usb_3_2_language_product_and_packaging_guidelines_final.pdf |title=USB 3.2 Specification Language Usage Guidelines from USB-IF|date=3 Oct 2018 |website= USB Implementers Forum|url-status=live |access-date=4 September 2019 |archive-date=3 November 2021|archive-url=https://web.archive.org/web/20211103022718/https://www.usb.org/sites/default/files/usb_3_2_language_product_and_packaging_guidelines_final.pdf}}</ref> To help companies with the branding of the different operation modes, USB-IF recommended branding the 5, 10, and 20&nbsp;Gbit/s capabilities as ''SuperSpeed USB 5Gbps'', ''SuperSpeed USB 10&nbsp;Gbps'', and ''SuperSpeed USB 20&nbsp;Gbps'', respectively.<ref>{{Cite web|last=Ravencraft|first=Jeff|url=https://www.usb.org/sites/default/files/D1T2-1%20-%20USB%20Branding%20Session.pdf|title=USB DevDays 2019 – Branding Session|date=19 November 2019|website=USB Implementers Forum|pages=16|type=Presentation|access-date=22 March 2020|archive-url=https://web.archive.org/web/20200322121822/https://www.usb.org/sites/default/files/D1T2-1%20-%20USB%20Branding%20Session.pdf|archive-date=22 March 2020}}</ref>

In 2023, they were replaced again,<ref name="USB data performance language usage 2024-01">{{cite web |date=22 Jan 2024 |title=USB Data Performance Language Usage Guidelines from USB-IF |url=https://www.usb.org/sites/default/files/usb_data_performance_language_usage_guidelines_jan_2024.pdf |website=USB Implementers Forum |url-status=live |archive-url=https://web.archive.org/web/20241126185424/https://www.usb.org/sites/default/files/usb_data_performance_language_usage_guidelines_jan_2024.pdf |archive-date=2024-11-26 |access-date=2025-04-02}}</ref> removing ''"SuperSpeed"'', with ''USB 5Gbps'', ''USB 10Gbps'', and ''USB 20Gbps''. With new ''Packaging'' and ''Port'' logos.<ref name="USB licensed marks">{{cite web |date=September 20, 2023 |title=USB-IF Licensed Mark(s) Requirements |url=https://www.usb.org/sites/default/files/trademark_license_agreement_licensed_mark_requirements_final_as_of_september_20_2023.pdf |website=USB Implementers Forum |url-status=live |archive-url=https://web.archive.org/web/20250311155445/https://www.usb.org/sites/default/files/trademark_license_agreement_licensed_mark_requirements_final_as_of_september_20_2023.pdf |archive-date=2025-03-11 |access-date=2025-04-02}}</ref>