The USB 1.1 spec now includes one Engineering Change 
Notice which is included in this zip file.  This 
document was approved on 11/23/99 by the USB Core team.
Any design work with the USB 1.1 spec should give equal
consideration to this ECN document and the spec.

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You may download a free copy of the Adobe Acrobat Reader from 
the Adobe website at www.adobe.com