Sorry, I was out of town this morning. The plug is the round one like you would hook to the back of a television. There are also red, yello, and white single prong connectors on the same cord. You use it to hook a video camera to your television.
I have a Dell latitude laptop and there is a port on the back that is round. It actually has a picture of a TV above it. I inserted the plug and did not have to force it. Now it will not come out. I am thinking I will have to cut the cord and just leave it in the computer unless someone has another idea. If I use pliers to try and remove it I think I will damage the computer.