I was fortunate enough to have been given a Lowrance Elite-4X. The gentleman also gave me a cable that connects to the transducer, and also looks like it could be a power cable. Here are some pictures of the unit and the cable I was given. Do I need to get another cord, or is this the only cable I need for this unit?
This cord looks to plug in on the right port.
The thicker cable runs to the transducer.
The skinnier one looks to have a black and red wire inside of it. This is the one I think is the power cable. It's hard to see it I know.