Very basic question of the Prodigy's past

I’m in the process of aquiring a Moog Prodigy…after many years of waiting. The tech is servicing it right now as I type this…making sure it stays in working order. However I noticed that the back panel only contains one sound output 1/4 inch jack. Where as some other models have multiple input jacks on the back.

I know there were about 11,000 made and I think the one I’m buying is in the mid- 3000’s

Anyone here know about the modifications made to the Prodigy design as the years passed??

Later Prodigys added CV/trigger jacks. They used to sell an upgrade for early units.

There are several sites (musicmachines is a good one) giving details on how to retrofit the additional jacks, but I’d be tempted to keep it original unless, of course, you really need them.