Classically, older computers come with outdated USB port controllers running USB version 1.1.This configuration, while quite stable, robs the computer of much of its possible speed.
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Resources Express Card Universal Serial Bus Revision 2.0 specification (file format, size 59.1 MB) provides the technical details to understand USB requirements and design USB compatible products.
Modifications to the USB specification are made through Engineering Change Notices (ECNs).
Enclosed in this zip file are the following documents: Cable and Connector Specification to use and reproduce the Specification for the sole purpose of, and solely to the extent necessary for, evaluating whether to implement the Specification in products that would comply with the specification.
Without limiting the foregoing, use of the Specification for the purpose of filing or modifying any patent application to target the Specification or USB compliant products is not authorized.
Except for this express copyright license, no other rights or licenses are granted, including without limitation any patent licenses.
In order to obtain any additional intellectual property licenses or licensing commitments associated with the Specification a party must execute the USB 3.0 Adopters Agreement.
NOTE: By using the Specification, you accept these license terms on your own behalf and, in the case where you are doing this as an employee, on behalf of your employer.
LEGAL DISCLAIMER THIS SPECIFICATION IS 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. USER ASSUMES THE FULL RISK OF USING THIS SPECIFICATION.
IN NO EVENT SHALL USB-IF BE LIABLE FOR ANY ACTUAL, DIRECT, INDIRECT, PUNITIVE, OR CONSEQUENTIAL DAMAGES ARISING FROM SUCH USE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.