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<DIR>   misc, USB consortium data and test files
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<DIR>   pdf, analysis and study
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<DIR>   pdf, common class
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<DIR>   pdf, content security
<DIR>   pdf, debug device
<DIR>   pdf, device driver specification
<DIR>   pdf, device microcontroller
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<DIR>   pdf, electrical testing
<DIR>   pdf, engineering change notices
<DIR>   pdf, errata
<DIR>   pdf, general
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<DIR>   pdf, hardware connector design specification
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<DIR>   pdf, host controller specification
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<DIR>   pdf, human interface device class
<DIR>   pdf, IrDA devices
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