USB not recognizing device input when SIMUB is running.

I have a strange issue.  I recently put in a 7 port PCIE USB card, which works great for everything plugged into it, until I turn on SIMHUB (8.04.10).   When I turn SIMHUB on, the peripherals (button boxes, logitech g29 wheel, etc) show that they stop receiving input (I can see this in the game controller settings - the buttons are not showing input).  When I close simhub again, the peripherals receive input as soon as simhub closes.  What could that possibly be?