Yes I would like to run two FX3 chips simultaneously on the same computer on two USB 3.0 ports. So what would be the best way have an identifier, such as a serial number? Would I need to have two sets of firmware, if the firmware does need to change? I can see in the cyfxusbenumdscr.c file you can change the /* Serial number string index */ value. What would be the best approach? Thank you.