Multiple USB security camera sensors...?

[nickleboyblue]

I need help setting up multiple USB camera sensors.  I read somewhere that it is bad to connect multiple USB cameras to the same USB bus, but that it might be possible to modify the driver to provide enough bandwidth to run multiple USB cameras on the same USB bus.  How is this done?  I need to connect two or three of them to the same USB hub if possible, which would clearly be a USB bandwidth overload unless the driver is modified as suggested above.