We have this board in A20B-0002-0490   0491   0492   0493 available. It is the resolver position control analog board used in slot 2. This unit was removed from a working machine. It is used in machines with Fanuc system 3000C controls. Exchange of your original part is welcome and a core refund may be available if your part is in repairable condition.Please contact us before picking " Buy it now" to make sure that we get you the correct board?