Document Library

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
Embedded USB2 Version 2.0 Supplement to the USB 2.0 Specification_0.pdf1.37 MBEmbedded USB2 Version 2.0: Supplement to the USB 2.0 Specification (eUSB2V2)
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Specification USB 2.0
USB Type-C 2.4 Release 202410.zip26.67 MBUSB Type-C® Cable and Connector Specification Release 2.4
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Specification Cable and Connector Specification USB Type-C
USB4 Specification Sep 2024_1.zip38.35 MBUSB4® Specification v2.0
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Specification Base Specification USB4
QuadDraw_2.msi6.32 MBQuadDraw & QuadraView Software/Firmware Installer
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Tools Test Tool Instruction USB 2.0, USB 3.2, USB Type-C
QuadraMAX PPS Test Manual 20240814.pdf1.52 MBQuadraMAX PPS Test Manual
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Tools Test Tool Instruction USB 2.0, USB 3.2, USB Type-C
SetupGuide_xHCI_SSUSB_PDK_Ver2.6.pdf325.01 KBTechGuide xHCI PDK
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Tools Test Tool Instruction USB 3.2
USB32_Embedding_Files_03182025.zip3.65 MBUSB 3.2 Embedding Files
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Tools Test Tool USB 3.2
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
USB3.0Adopters_0.pdf142.94 KBList of USB 3.0 Adopters
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Legal USB 3.2
USB4Adopters_1.pdf133.4 KBList of USB4 Adopters
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Legal USB4
USB Active Cable Thermal Compliance Test Specification v0.92 May 15th.pdf2.05 MBUSB Active Cable Thermal Compliance Test Specification
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Specification Test Specification USB Type-C
Audio2_with_Errata_and_ECN_through_Apr_2_2025.pdf1.79 MBUSB Device Class Definition for Audio Devices Release 2.0 with Errata and ECN through April 2, 2025
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Specification Device Class Specification
IntelUSB4V2EvaluationDockBKCFilesInstallerWW212025.zip1.07 MBIntel USB4 Evaluation Dock BKC Files Installer
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Tools Test Tool USB4
CDC1.2_WMC1.1_012011_0.zip3.82 MBClass definitions for Communication Devices 1.2
  • CDC Subclass for Asynchronous Transfer Mode Devices
  • CDC Subclass for Communications Devices
  • CDC Subclass for Ethernet Control Model Devices
  • CDC Subclass for ISDN Devices
  • CDC Subclass for PSTN Devices
  • CDC Subclass for Wireless Mobile Communication Devices 1.1
  • WMC110-Errata1.pdf and CDC v1.2 WMC v1.1 Errata 1
  • USB Class Definitions for Communications Devices
    Revision 1.2 with Errata and ECN through April 3, 2025
  • Adopters Agreement
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Specification Device Class Specification
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
3.2 Interoperability Testing v1.04 w USB Type-C.pdf2.59 MBxHCI Interoperability Test Procedures For Peripherals, Hubs and Hosts
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Specification Test Specification USB 2.0, USB 3.2, USB Power Delivery, USB Type-C
USB4 CV Guide-rev06042025.pdf12.88 MBUSB4CV Guide
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Tools Test Tool Instruction USB4
USB4 SigTest_0.99.zip38.43 MBUSB4 SigTest
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Tools Test Tool USB4
USB3CV_XHCICV_CTSs_August_2025 1_0.zip12.44 MBUSB3CV and XHCICV Compliance Test Specifications
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Specification Test Specification USB 2.0, USB 3.2
Vendor_Info_File_v3.36.zip2.32 MBUSB Vendor Info File Generator
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Tools Test Tool
dualhostusb3cv-1.2.2.0.tar_.zip46.51 MBDualHostUSB3CV for Linux
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Tools Test Tool USB 3.2
USB4 Interoperability Testing v1.06.pdf1 MBUSB4 Interoperability Test Procedures
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Specification Test Specification USB4
USB4 Product Test Matrix - V5.pdf110.97 KBUSB4 Product Test Matrix
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Test Matrix USB4
USB_Type-C_Shared_Capacity_Interoperabiltiy_CTS_1.0.pdf416.26 KBUSB Type-C Shared Capacity Charger Interoperability Compliance Test Specification

Version 1.0

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Specification Test Specification USB Type-C
USB4CV_CTSs_October_2025.zip20.58 MBUSB4CV Compliance Test Specification
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Specification Test Specification USB4
USB Audio v4.0_0.zip1.95 MBUSB Audio Devices Release 4.0 and Adopters Agreement
  • USB Device Class Definition for Audio Devices Release 4.0 and ECNs through October 31, 2025
  • USB Audio v4.0 Adopters Agreement
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Specification Device Class Specification
XHSETT 2.2.1.0 Installer.exe29.53 MBXHSETT
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Tools Test Tool USB 3.2
USB3CV 3.2.3.0 Installer.exe46.59 MBUSB3CV
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Tools Test Tool USB 3.2
USB4CV 1.7.1.0 Installer.exe49.98 MBUSB4CV
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Tools Test Tool USB4
XHCICV 3.2.4.0 Installer.exe45.6 MBXHCICV
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Tools Test Tool USB 3.2
DualHostUSB3CV 1.2.3.0 Installer.exe44.8 MBDualHostUSB3CV
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Tools Test Tool USB 3.2
usb4cv-1.7.1.0.tar_.zip49.38 MBLinux USB4CV
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Tools Test Tool USB4
USBET2.zip421.88 KBUSBET20
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Tools Test Tool USB 2.0
hut1_7.pdf4.32 MBHID Usage Tables 1.7
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Device Class Specification
USB-IF CW140 Vendor Hosted Test Room Form.pdf169.46 KBUSB-IF CW140 Vendor Hosted Test Suite Form
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USB4 Electrical Test Specifications_02.2026.zip11.58 MBUSB4 Electrical Compliance Test Specification

USB4 Electrical Compliance Test Specification Ver. 1.04

USB4 Electrical - Captive Device Compliance Test Specification Ver 1.02

Universal Serial Bus 4 (USB4®) Version 2 GEN4 Electrical Compliance Test Specification Ver 1.0

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Specification Test Specification USB4
USB_Type_C_Active_Cable_Test_Matrix.pdf397.66 KBUSB Repeater and Active Cable Test Matrix
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Test Matrix USB 3.2, USB Type-C, USB4
NCM11_20260205.zip6.97 MBUSB Communications Class Subclass Specifications for Network Control Model Devices v1.1
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Device Class Specification
USB_PD_R3.2_V1.2.zip40.87 MBUSB Power Delivery

1.  USB Power Delivery Specification Revision 2.0 Version 1.3 and corresponding Adopters Agreements

2.  USB Power Delivery Specification Revision 3.2 Version 1.1 and corresponding Adopters Agreements

3.  USB Power Delivery Specification Revision 3.2 Version 1.2 and corresponding Adopters Agreements

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Specification Base Specification USB Power Delivery
Instructions to Run Data Pattern Test.pdf362.12 KBInstructions to Run Data Pattern Test (USB 3.2 Tunneling) on a USB4® Host
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Tools Test Tool Instruction USB4
USB PD3 CTS Q2 2026 OR.zip4.72 MBUSB Power Delivery Compliance Test Specification
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Specification Test Specification USB Power Delivery