This is the version with the ballast button on it. Keep in mind there are several manufacturer part numbers that can be associated with it outside of the part number Malibu used.
The manufacturer part numbers should be printed on a label on the unit itself and will be one of the following: 1539-10207-00 or 1539-10504-00.
The Malibu part number may also be on it as well, which could be one of the following: 3728001, 3728002, 3728003.
If your Info Center has either of the above part numbers on it then this is the correct replacement. If you're not sure, feel free to reach out with your boat's HIN and we'll be happy to look it up for you!