The ansmann usb 2 drive is an in car charger with two usb sockets for charging mobile phones and various usb devices as you travel simply plug the usb 2 drive into your car cigarette lighter socket insert your usb device eg an mp3 player usb phone charger cable into either one of the usb sockets and start charging output voltage 5v maximum load 1000ma or 2 x 500ma 12 24v dc input