USB Universal Car Charger with one port lets you charge USB-powered devices on the go. Two-port car charger works with most USB-powered devices so you can use your critical devices the way you need to without holding back to save power. Simply plug this charger into the vehicle outlet. Use the cables you already have as power cords to charge devices such as smartphones and MP3s by connecting them to your computer. With this dual-port charger, you can charge up to two devices on one car outlet. Sleek, compact design offers easy portability.