The Original USB 2.0 specification released on April 27, 2000

Errata to the USB 2.0 specification as of December 7, 2000

Mini-B connector Engineering Change Notice to the USB 2.0 specification.

Pull-up/pull-down Resistors Engineering Change Notice to the USB 2.0 specification.

Errata to the USB 2.0 specification as of May 28, 2002

Interface Association Descriptor Engineering Change Notice to the USB 2.0 specification.

Rounded Chamfer Engineering Change Notice to the USB 2.0 specification as of October 8, 2003

Unicode Engineering Change Notice to the USB 2.0 specification as of February 21, 2005

Inter-Chip USB Supplement Revision 1.0 as of March 13, 2006

Micro-USB Cables and Connectors Specification Revision 1.01 as of April 4, 2007

USB 2.0 Link Power Management Addendum Engineering Change Notice to the USB 2.0 specification as of July 16, 2007.

High-Speed Inter-Chip USB Electrical Specification Revision 1.0 as of September 23, 2007

Suspend Current Limit Changes Engineering Change Notice to the USB 2.0 Specification as of April 9, 2008

5V Short Circuit Withstand Requirement Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008

Device Capacitance Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008

Material Change Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008

USB 2.0 Phase-locked SOFs Engineering Change Notice to the USB 2.0 Specification as of December 22, 2008

MicroUSB 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

USB 2.0 Connect Timing as of April 24, 2009

On-The-Go and Embedded Host Supplement to the USB 2.0 Specification as of May 8, 2009

"On-The-Go Supplement to the USB 2.0 Specification" Adopters Agreement

Quad Type Cable Additional for Micro USB ECN as of December 29, 2009

USB_for_Portable_Devices_FINAL.pdf （PTT）