Hey Guys! The cooler that I'm selling is made specifically to plug into vehicles, like a camper or truck. The built-in fan is meant to circulate the cool air from the ice, and keep it from melting to quickly. It also has an extra port to plug in another item (see in the picture). It's a little scuffed but otherwise it works like new. I'm selling it because I upgraded to a truck mini fridge (they're very expensive). I bought it for a little over $100 from Walmart and I'm selling for $50. It's called Koolatron P20, 18 quarts. I also provided a pic of the web page. Contact me if you're interested. Thanks!