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ITsVISTA KB-Link: KB968202

USB Isochronous Transfers Not Accessed by Hardware

USB Isochronous transfers to a High-Speed USB device may complete later than scheduled, often with no packets transferred. This may occur when the StartFrame value is explicitly set to a large value after current frame (for example, more than 16ms from the Current Frame).

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB968202.

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