problems with peripherials

hi
Is it possible that when Cross DJ is installed on a macbook pro and the Vfx Control is connected to the MBP it ONLY works if no other peripherials are connected to the remaining USB port?
The mapping is correct and when only Vfx Control is connected it works, no problem, but if a mouse, pendrive, etc. is connected to the other USB port suddenly the controller stops working
is this a common behavior?
thanks in advance
Is it possible that when Cross DJ is installed on a macbook pro and the Vfx Control is connected to the MBP it ONLY works if no other peripherials are connected to the remaining USB port?
The mapping is correct and when only Vfx Control is connected it works, no problem, but if a mouse, pendrive, etc. is connected to the other USB port suddenly the controller stops working
is this a common behavior?
thanks in advance