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How to distinguish between multiple but the same type usb cameras?

I am trying to use three logitech usb cameras at a computer with NI-IMAQ USB Driver. But I have no idea how to distinguish between three different but the same type cameras. The usb camera enumerate vi returns the same camera name for the same type of camera. Since usb camera init vi accept only camera name, it can not distinguish three cameras. Moreover, I cannot find no vi that can select camera with camera ID.
 
I am attaching screen capture of the vision assistant with three same logitech camera. As you see, the three cameras have the same name. If I try to use the second or the third camera, it only shows the first camera.
 
Please teach me soon.
 
Thank you.
 
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YKey,

This appears to be a duplicate thread to the following link:

http://ae.natinst.com/operations/ae/public.nsf/web/searchinternal/b9107a7f281f9b408625720b0078e5a8?OpenDocument

Please refer to the above link for the resolution to this problem.  If this connection differs in any way, then I apologize, and please narrow your question down, and I will try my best to answer your questions!

Respectfully,
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