Infinity AM/FM Cassette Radio

I have a 1990 Chrysler Le Baron Convertible. It has the Infinity am/fm cassette radio. I removed the radio and noticed that there are two connections that are not currently in use and was wondering what they are for. One looks like a female connection similar to the mouse connection on a computer. The other looks like a ethernet connection on a computer. Sorry for the reference to a computer but that is the best way I can explain what they look like. Any help would be appreciated.