FANUC VELOCITY CONTROL UNIT This unit was removed from a working machine and is tested good. ( 3 available ) Also available are similar unit part # A06B-6045-H001 without on board power supply. ( 3 available ) It is used in machines with dc servos and system 6 and older controls. Exchange of your original part is welcome and a core refund may be available if your part is in repairable condition.