Document Library

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

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

• USB Device Class Definition for Audio Devices Release 4.0 and ECNs through October 31, 2025
• USB Audio v4.0 Adopters Agreement

Version 1.0

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

• 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

1. Embedded USB2 (eUSB2) Physical Layer Supplement to the USB Revision 2.0 Specification, Rev. 1.2 and corresponding ECN

2. eUSB2 V1.2 ECN Repeater HS SYNC as of September 27, 2024

3. eUSB2 V1.2 ECN Native Mode Auto-Resum as of September 27, 2024

• USB Battery Charging 1.2 Compliance Plan

• Battery Charging Specification v1.2
• Errata for "Battery Charging Specification Revision 1.2 December 7, 2010", as of Oct 12, 2011
• Errata for "Battery Charging Specification Revision 1.2 October 12, 2011" as of Mar 15, 2012
• Battery Charging Specification (Including errata and ECNs through March 15, 2012) Revision 1.2, March 15, 2012

USB Type-C® Bridge Class Specification v1.1

USB Type-C® Bridge Class Specification v1.1 - redline

USB 3.0 Adopters Agreement

• Power Delivery Design Issues for Hi-Speed USB on Motherboards

• USB Multiflow Extension for Mobile Broadband Interface Model v1.0
• Adopters Agreement

• USB 3.1/USB Type-C(TM) Desktop Front Panel Cable and Connector Implementation Document

• On-Board USB connections for Digital Media Devices vs. Removable Media and Readers

• USB 3.1 Reference Channel Models

• Media Agnostic USB v1.0a Spec
• Adopters Agreement

• USB 3.0 Adopters Agreement

• Propagation Delay between Host Transceivers and Downstream Ports

• USB 3.1 Channel Loss Budgets

• USB PS Interface White Paper

• Methodology Used to Determine SuperSpeed USB 10 Gbps (USB 3.1) - Gen2 Channel and Cable Assembly High Speed Compliance

• USB Mass Storage Class Specification for UASP Bootability v1.0
• Adopters Agreement

• MBIM Compliance Testing v1.0

• Managing Connector and Cable Assembly Performance for USB SuperSpeed

• Mobile Broadband Interface Model v1.0 Errata -1
• Adopters Agreement

• USB Print Interface Class IPP Protocol Specification
• Adopters Agreement

• CDC Subclass for Communications Devices
• CDC Subclass for Wireless Mobile Communications Devices 1.1
• CDC v1.2 WMC v1.1 Errata 1 Adopters

• High-Speed Inter-Chip Adopters Agreement Amendment

• UVC v1.5 Class specification
• USB Video Example v1.5
• USB Video FAQ v1.5
• USB Video Payload DV v1.5
• USB Video Payload Frame Based v1.5
• USB Video Payload H264 v1.5
• USB Video Payload MPEG-2 TS v1.5
• USB Video Payload Uncompressed v1.5
• USB Video Payload VP8 v1.5
• USB Video Payload Stream Based v1.5
• USB Video Transport v1.5
• USB Video Payload_MJPEG v1.5
• USB Video Temporal Encoder Examples v1.5

• USB This Card Specification Rev 1.0
• Adopters Agreement

• USB Device Class Definition for Audio/Video Devices
• Basic Device Profile (BDP)

• Device Class Definition for Content Security Devices 2.0

• Content Security Method 5 - High-bandwidth Digital Content Protection 2.1 (HDCP 2.1) Implementation

• USB 3.0 Radio Frequency Interference Impact on 2.4 GHz Wireless Devices

• USB Device Class Definition for Audio/Video Devices
• AVFormat 1 - Video over Bulk
• USB Device Class Definition for Audio/Video Devices
• AVFormat 2 - Isochronous Audio
• USB Device Class Definition for Audio/Video Devices
• AVFormat 3 - Uncompressed Full Frame Isochronous Video
• USB Device Class Definition for Audio/Video Devices
• AV Device Class Overview & AV Function Definition
• Video & USB Timings

• USB 3.0 SuperSpeed Equalizer Design Guidelines

• Media Transfer Protocol v.1.1 Spec
• MTP v.1.1 Adopters Agreement

• Network Control Model Devices Specification v1.0 and errata
• Adopters Agreement

• Mass Storage Class Specification Overview 1.4

• Audio Device Class Spec for Basic Audio Devices v1.0
• Audio Adopters Agreement

• USB Attached SCSI Protocol (UASP) v1.0
• Adopters Agreement

• USB 2.0 On-The-Go Specification Supplement Adopters Agreement

• USB 3.0 CDR Model

• A Standard for Host-Side Certified Wireless USB Connection Context Storage on Windows Operating Systems

• Electrical Isolation and Improved Electromagnetic Compatibility for Personal Healthcare Devices using USB

• Personal Healthcare Rev. 1.0, Errata for USB Personal Health Care Device Class
• Personal Healthcare Adopters Agreement

• USB Cables and Connectors Class Document

• Lockable Mass Storage Specification 1.0
• Adopters Agreement

• Audio Devices Rev. 2.0
• Audio 2.0 Adopters Agreement

• Low Voltage Inter-Chip Adopters Agreement Amendment

• USB Video Class v1.1
• USB Video Identifiers v1.1
• USB Video Payload DV v1.1
• USB Video Payload Frame Based v1.1
• USB Video Payload MJPEG v1.1
• USB Video Payload MPEG-2 TS v1.1
• USB Video Payload Uncompressed v1.1
• USB Video Payload Stream Based v1.1
• USB Video Payload H264 v1.0
• USB Video Transport v1.1
• USB Video Example v1.1
• USB Video FAQ v1.1
• USB Video Payload H264 09Aug2011 Errata

• Device Class:  Smart Card CCID Specification for Integrated Circuit(s) Cards Interface Devices

• Device Class:  Smart Card ICCD Specification for USB Integrated Circuit(s) Card Devices

• USB 'A' Plug Form Factor Rev. 1.0

• CDC Subclass Specification for Ethernet Emulation Model Devices 1.0

• Mass Storage Bootability Specification 1.0

• Device Firmware Upgrade 1.1

• USB Interface Association Descriptor Device Class Code and Use Model

• Mass Storage Control/Bulk/Interrupt (CBI) Specification 1.1

• USB Test and Measurement Class Specification (USBTMC)

• Content Security Method 2 - USB Digital Transmission Content Protection Implementation 1.0

• Understanding WDM Power Management v1.1

• USB Driver Interface (OpenUSBDI) Specification

• Still Image Capture Device Definition 1.0 and Errata as of 16-Mar-2007

• USB 2.0 Adopters Agreement

• IrDA Bridge Device Definition 1.0

• HID Parser Error Checking

• Content Security Method 1 - Basic Authentication Protocol 1.0

• USB Device Class Definition for Printing Devices

• USB MIDI Devices 1.0

• Mass Storage Bulk Only 1.0

• Mass Storage UFI Command Specification 1.0

• Audio Device Document 1.0

• Audio Data Formats 1.0

• Audio Terminal Types 1.0

• Monitor Device Document 1.0

• USB Usage Tables for HID Power Devices

• USB - APM Interactions

• An Analysis of Wireless Device Implementations on USB

• USB Latency Requirements and the Effect of Video Adapter PCI Retry Condition on Maintaining USB Streaming Pipelines

• USB Bandwidth Analysis

• Design Guide for a low speed buffer for USB

• USB Connector for Mezzanine Applications Guidelines Rev. 1.0

• Common Class Base Specification 1.0

• USB 3.0 Electrical Compliance Methodology

• USB 3.0 Jitter Budgeting

• Cyclic Redundancy Checks in USB

• Designing a Robust USB Serial Interface Engine (SIE)

• Handling The IRP_MN_START_DEVICE PnP IRP v.1.0

• System Test Implementers Forum

• An Introduction to Hi-Speed USB