Universal dual 2 port usb car charger adapter. Charge two USB devices in your car at same time. Use your car to charge any devices (digital cameras, PDAs, mobile phones, USB accessories and more) that can rely on USB for power! This adapter plugs into your car’s lighter jack to become a powered USB port. Patented circuit board designed to protect your valuable gadgets from short circuits. Fit electronic appliances that use a USB charging cable. Input: 12-24V DC. Total USB output: DC 5V 2.1A + 5V 1A.