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A4tech webcam

Last response: in Windows XP
March 9, 2013 6:04:21 AM

my external webcam was working from last last six month, but now when i connect a new china vcam at same time then A4tech camera does not working. in the task bar malfunctioning message is appeared every time. in device manager an unknown device detects in ush controller ports

give me suggestion if you have

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