In January/ February 2016 I beta tested a new memory card, originally intended for Roland devices but I’ve confirmed it works with the Akai MX-1000. Useful if you’re using it live as a master controller for Apple Mainstage. This 26 year old keyboard can be set up as a remote for Mainstage, and with the memory card you’ll have more than enough program changes to cater for the most demanding show.

Details of the card are in this thread.