Where do the speakers plug into a dell computer?

I unplugged the speakers to my computer on an accident... The end of the speaker cord is RED. And there are NO RED holes on the hard drive. Help me? Please? I have a Dell computer. If that helps with anything.Where do the speakers plug into a dell computer?there are color coded holes on the back of the computer (if it is a desktop) plug it into the green one...or the headphone jack, either will work...