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Article ID: 158836 - Last Review: September 30, 2003 - Revision: 2.0
Compaq USB Camera May Not Work Properly on Other Computers
This article was previously published under Q158836
When you attempt to use a Compaq USB camera with an OpenHCI (OHCI) USB
host controller, the camera may not be detected and may not work properly.
The Compaq USB camera was designed and developed for use on the Intel
Universal HCI (UHCI) USB host controller. It is not supported on an OHCI
controller.
OHCI host controllers employ optimization on the control endpoint zero,
where multiple transactions are submitted within a single frame. The UHCI
host controller sends only a single transaction per frame. The camera
cannot respond to a second transaction within a single frame.
The Compaq USB camera that is included with the Compaq Presario computer
is intended to be used only on that computer. For more information,
contact Compaq.
Retired KB Content DisclaimerThis article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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