It is not possible to directly swap the circuit board for these drives. Example
Unique data (PCB firmware) must be transferred from the old PCB to the new PCB, so please mail the old board to us, we will transfer this data for you. (Procedure)
You will only need to find a physical match for the board, the firmware transfer will match the rest.
The board # is imprinted directly onto the board, common locations are outlined below