i have two scanners for my pcv rx514 and they are connected via a powered usb2 hub, but only one of the scanners will work. it all depens which one i install last, i dont want to use them both at the same time, just be able to pick which one in the capture program,if i try to select the other device it says that the cable may not be connected!!! has anyone had a similar problem with USB connections 
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