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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
Vendor_Info_File_v3.31.zip2.01 MBUSB Vendor Info File Generator Tools Test Tool
USB4 SigTest_0.95.zip31.12 MBUSB4 SigTest Tools Test Tool USB4
3.2 Interoperability Testing v1.02 w USB Type-C.pdf2.4 MBxHCI Interoperability Test Procedures For Peripherals, Hubs and Hosts Specification Test Specification USB 2.0, USB 3.2, USB Power Delivery, USB Type-C
usb_20_20240604.zip13.59 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
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Specification Base Specification USB 2.0
USB3CV 3.1.2.0 Installer.exe30.75 MBUSB3CV Tools Test Tool USB 3.2
DualHostUSB3CV 1.1.2.0 Installer_0.exe30.09 MBDualHostUSB3CV Tools Test Tool USB 3.2
USB-IF CW135 Vendor Hosted Test Room Form.pdf164.8 KBUSB-IF CW135 Vendor Hosted Test Suite Form
USB4CV 1.2.2.0 Installer.exe51.65 MBUSB4CV Tools Test Tool USB4
USB4CV_CTSs_April_2024.zip19.54 MBUSB4CV Compliance Test Specification Specification Test Specification USB4
XHSETT 2.1.1.0 Installer_0.exe29.22 MBXHSETT Tools Test Tool USB 3.2
XHCICV 3.1.1.0 Installer_0.exe28.27 MBXHCICV Tools Test Tool USB 3.2
USB PD3 CTS Q2 2024 OR.zip4.98 MBUSB Power Delivery Compliance Test Specification Specification Test Specification USB Power Delivery
USB Type-C Locking Connector Specification.zip821.04 KBUSB Type-C® Locking Connector Specification Specification Cable and Connector Specification USB 2.0, USB 3.2, USB Type-C
USB Type C Functional Test Specification 2024 03 03.pdf1.62 MBUSB Type-C Functional Test Specification Specification Test Specification USB Type-C
USB 3 2 Link Layer Test Specification 2024 03 03.pdf1.27 MBUSB 3.2 Link Layer Test Specification Specification Test Specification USB 3.2
USB4EnableIdleSettings.zip402 bytesUSB4EnableIdleSettings Tools Test Tool USB4
USB_Type-C_Shared_Capacity_Interoperabiltiy_CTS_0.8.pdf657.8 KBUSB Type-C Shared Capacity Charger Interoperability Compliance Test Specification Specification Test Specification USB Type-C
XHSETT 2.1.0.0 Installer.exe29.19 MBXHSETT 2.1.0.0
hut1_5.pdf4.25 MBHID Usage Tables 1.5 Device Class Specification
USB3.0Adopters.pdf530.45 KBList of USB 3.0 Adopters Legal USB 3.2
USB2.0Adopters.pdf567.67 KBList of USB 2.0 Adopters Legal USB 2.0
USB4Adopters_0.pdf511.6 KBList of USB4 Adopters USB4
USB PD R3.2 V1.0_1.zip68.63 MBUSB Power Delivery

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

2.  USB Power Delivery Specification Revision 3.1 Version 1.8, ECNs and corresponding Adopters Agreement

3.  USB Power Delivery Specification Revision 3.2 Version 1.0 and corresponding Adopters Agreement

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Specification Base Specification USB Power Delivery
USB Type-C 2.3 Release 202310.zip27.79 MBUSB Type-C® Cable and Connector Specification Release 2.3 Specification Cable and Connector Specification USB Type-C
Time Measurement Equipment - Setup Procedure Rev1.03.pdf3.65 MBTime Measurement Equipment Setup Procedure Tools Test Tool Instruction USB4
SINK PPS Interoperability Charging Cycle Test Procedure_Rev0.82.pdf150.41 KBSINK PPS Interoperability Charging Cycle Test Procedure Specification Test Specification USB Power Delivery, USB Type-C
USB Audio v4.0.zip2.71 MBUSB Audio Devices Release 4.0 and Adopters Agreement
  • USB Device Class Definition for Audio Devices Release 4.0
  • USB Audio v4.0 Adopters Agreement
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Specification Device Class Specification
USB4 Specification June 2023.zip61.99 MBUSB4® Specification v2.0 Specification Base Specification USB4
UCSI Revision 3.0.zip3.61 MBUSB Type-C® Connector System Software Interface (UCSI) Specification Specification Cable and Connector Specification USB Type-C
QuadDraw_0.msi6.24 MBQuadDraw & QuadraView Software/Firmware Installer Tools Test Tool Instruction USB 2.0, USB 3.2, USB Type-C
SetupGuide_xHCI_SSUSB_PDK_Ver2.5.pdf275.78 KBTechGuide xHCI PDK Ver 2.5 Tools Test Tool Instruction USB 3.2
Generic_Dual_BDF_TechDoc_PCIDevice.pdf268.32 KBIP-Agnostic Dual-BDF Vendor-Specific Capability (PCI/PCIe) White Paper
MCCI 3411 - Mode Switch.pdf831.74 KBMCCI Mode Switch
CTSs_USB3CV_XHCICV.zip14.01 MBUSB3CV and XHCICV Compliance Test Specifications Specification Test Specification USB 2.0, USB 3.2
SigTest_3.2.11.4_Installer.exe23.06 MBSigTest 3.2.11.4 Tools Test Tool USB 3.2
sigtest-4-0-23-2.msi29.59 MBSigTest 4.0.23.2 Tools Test Tool USB 3.2
USB I3C Device Class Revision 1.1.pdf1.52 MBUSB I3C® Device Class Specification v1.1 Specification Device Class Specification
USB_Upstream_Facing_Port_Powered_Hub_White_Paper_0.9.pdf272.16 KBUSB Upstream Facing Port Powered Hub White Paper White Paper USB 2.0, USB 3.2, USB Type-C
USB4 Adopters Agreement PDF Submission Update 20230223_0.pdf99.23 KBUSB4 Adopters Agreement Legal USB4
USB4ETT V.1.1.2.zip62.04 MBUSB4ETT Tools Test Tool USB4
USB-IF Integrators List Marketing Name Guidance_January 2023.pdf146.76 KBUSB-IF Integrators List Marketing Name Guidance
Electrical_Compliance_Test Specification_Linear_Re_Driver_Active_Cable_LRD_rev1p0.pdf1.92 MBElectrical Compliance Test Specification Linear Re-Driver Active Cable (LRD) Specification Test Specification USB Type-C, USB4
USB 80G PHY background.pdf1.33 MBUSB 80G PHY Layer Analysis Presentations USB4
USB4 Interoperability Testing v1.02_0.pdf709.09 KBUSB4 Interoperability Test Procedures Specification Test Specification USB4
USB-IF Duty of Care_1.pdf92.26 KBUSB-IF Duty of Care
COVID Waiver and Release_CW#129.pdf100.39 KBUSB-IF COVID and Infectious Diseases Agreement and Waiver/Release
USB4 Product Test Matrix - V4.pdf110.95 KBUSB4 Product Test Matrix Test Matrix USB4
USB4 TBT3-Compatibility CTS Rev 1.1.zip1.28 MBUSB4™ Thunderbolt3™ Compatibility Compliance Test Specification Specification Test Specification USB4
USBDevDaysSeoul 2022SponsorApplication.pdf197.46 KBUSB DevDays Seoul Sponsor Application
COVID Waiver and Release_3.pdf142.33 KBUSB-IF COVID and Infectious Diseases Agreement and Waiver/Release - Seoul