AP One Rugged power connector

I want to use the AP One Rugged green power connector to input 12v directly (on my boat). I can’t find a diagram showing which of the 4 connections are for power and ground. Under the connector, it is labeled
- O/P I/P +
12V - 36V DC

So I think ground is far left, +12v is far right but I would prefer to be sure. What are O/P and I/P?

Where can I find this?

Hi Pat, you are correct - ground/negative is far left and positive is far right. O/P and I/P are not used & reserved for future use.

Thanks! Too bad it is not in the docs…