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LEGAL DISCLAIMER
THESE SPECIFICATIONS ARE PROVIDED “AS IS” AND WITHOUT ANY WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. WITHOUT LIMITATION, THERE IS NO WARRANTY OF NON-INFRINGEMENT, NO WARRANTY OF MERCHANTABILITY, AND NO WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. ALL WARRANTIES ARE EXPRESSLY DISCLAIMED. USER ASSUMES THE FULL RISK OF USING THESE SPECIFICATIONS. IN NO EVENT SHALL USB-IF OR THE USB 3.0 PROMOTERS BE LIABLE FOR ANY ACTUAL, DIRECT, INDIRECT, PUNITIVE, OR CONSEQUENTIAL DAMAGES ARISING FROM SUCH USE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Title Category Type Technology Date
USB Type-C Connector System Software Interface UCSI Revision_3.1.zip4.97 MBUSB Type-C® Connector System Software Interface (UCSI) Specification
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Specification Cable and Connector Specification USB Type-C
USB-IF Policy-Connectorless xHCI-10092025.pdf178.59 KBUSB-IF Policy on Connectorless xHCI with Embedded Device(s) Certification Testing
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USB Type-C 2.5 Release 202603.zip28.38 MBUSB Type-C® Cable and Connector Specification Release 2.5
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Specification Cable and Connector Specification USB Type-C
usb_20_20250603.zip13.82 MBUSB 2.0 Specification
  1. The Original USB 2.0 specification released on April 27, 2000
  2. USB 2.0 Adopters Agreement
  3. Errata to the USB 2.0 specification as of December 7, 2000
  4. Mini-B connector Engineering Change Notice to the USB 2.0 specification
  5. Pull-up/pull-down Resistors Engineering Change Notice to the USB 2.0 specification
  6. Errata to the USB 2.0 specification as of May 28, 2002
  7. Interface Association Descriptor Engineering Change Notice to the USB 2.0 specification
  8. Rounded Chamfer Engineering Change Notice to the USB 2.0 specification as of October 8, 2003
  9. Unicode Engineering Change Notice to the USB 2.0 specification as of February 21, 2005
  10. Inter-Chip USB Supplement Revision 1.0 as of March 13, 2006
  11. Micro-USB Cables and Connectors Specification Revision 1.01 as of April 4, 2007 and corresponding Adopters Agreement
  12. USB 2.0 Link Power Management Addendum Engineering Change Notice to the USB 2.0 specification as of July 16, 2007
  13. High-Speed Inter-Chip USB Electrical Specification Revision 1.0 as of September 23, 2007
  14. Suspend Current Limit Changes Engineering Change Notice to the USB 2.0 Specification as of April 9, 2008
  15. 5V Short Circuit Withstand Requirement Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  16. Device Capacitance Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  17. Material Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  18. USB 2.0 Phase-locked SOFs Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008
  19. Micro-USB Micro-B ID Pin Resistance and Tolerance stack-up between D+ and D- Engineering Change Notice to the MicroUSB Specification to the USB 2.0 Specification, Revision 1.01 as of December 22, 2008
  20. Quad Type Cable Additional for Micro USB ECN as of December 29, 2009
  21. Clarification on the Chamfer on USB 2.0 Micro Connectors ECN as of March 23, 2010
  22. Maximum Unmating Force Value Definition to USB 2.0 Micro Connectors ECN as of March 23, 2010
  23. "On-The-Go Supplement to the USB 2.0 Specification" Adopters Agreement
  24. USB TEST_MODE Selector Values ECN as of July 26, 2010
  25. Errata for USB 2.0 ECN:  Link Power Management (LPM) - 7/2007 as of October 11, 2011
  26. On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification, Revision 2.0 version 1.1a as of July 27, 2012
  27. HSIC ECN as of May 21, 2012
  28. USB 2.0 Connect Timing ECN Update as of April 4, 2013
  29. HSIC Disconnect Supplement ECN as of September 18, 2013
  30. USB 2.0 VBUS Max Limit ECN as of August 11, 2014
  31. USB OTG EH ECN Maximum Vbus Voltage dated November 26, 2014
  32. USB 2.0 DC Resistance as of October 8, 2021
  33. USB 2.0 Double Isochronous IN Bandwidth ECN as of June 4, 2024
  34. USB 2.0 eUSB2 Repeater ECN as of September 27, 2024
  35. USB 2.0 Double Isochrnous IN ECN dated April 8, 2025
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Specification Base Specification USB 2.0
USB Type-C_Compliance Document_Rev_2_1b_June_2021.pdf2.4 MBUSB Type-C® Connectors and Cable Assemblies Compliance Document Rev. 2.1b
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Test Specification USB Type-C
USB Type-C Locking Connector Specification.zip821.04 KBUSB Type-C® Locking Connector Specification
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Specification Cable and Connector Specification USB 2.0, USB 3.2, USB Type-C
USB Type-C Connectors and Cable Assemblies Compliance Document Rev 2.1b.zip4.58 MBUSB Type-C Connectors and Cable Assemblies Compliance Document
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Specification Test Specification USB Type-C
USB4_Gen3_plug_HS_design_guide_white_paper_2020_10_27.pdf898.56 KBUSB4 Gen3 Plug Connector High Speed Design Guide
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White Paper USB4
USB 3.1 Legacy Cable and Connector Revision 1.0.zip7.64 MBUSB 3.1 Legacy Cable and Connector Revision 1.0
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Specification Cable and Connector Specification
D1T2-3b - USB Type-C Linux Connector Class.pdf1.3 MBDemystifying USB-C(R) using Linux's USB Type-C(R) Connector Class
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Presentations USB Type-C
CabConn_Legacy_3_1_Compliance_Rev_1_1.pdf0 bytesUniversal Serial Bus 3.1 Legacy Connectors and Cable Assemblies Compliance Document
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Specification Test Specification USB 3.2
USB3p1_Front_Panel_CabCon_Implment_Doc_Rev1p1.pdf0 bytesUSB 3.1/USB Type-C(TM) Desktop Front Panel Cable and Connector Implementation Document
  • USB 3.1/USB Type-C(TM) Desktop Front Panel Cable and Connector Implementation Document
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White Paper
USB_SuperSpeed_CabCon_Whitepaper.pdf0 bytesManaging Connector and Cable Assembly Performance for USB SuperSpeed
  • Managing Connector and Cable Assembly Performance for USB SuperSpeed
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White Paper
CabConn20.pdf0 bytesCables and Connectors Class 2.0
  • USB Cables and Connectors Class Document
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Specification Cable and Connector Specification
CabConn20.pdf0 bytesUSB 2.0 Cable and Connector Class Document
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Specification Test Specification USB 2.0
MezzanineConnectorFinal.pdf0 bytesUSB Connector for Mezzanine Applications Guidelines Rev. 1.0
  • USB Connector for Mezzanine Applications Guidelines Rev. 1.0
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Specification Cable and Connector Specification