USB to 2.0mm DC Charging Cable for phones or electronics Fit your USB port with this cable so you can power small devices and electronics that use a DC 2.0mm jack. Cable uses the 5V DC from the USB port USB Type A male to DC 2.0mm barrel connector DC Power Plug Diameter (Outer/Inner): 2.0mm/1.0mm For small electronics and devices such as phones, HUB,GPS,MP3,MP4,mini Speaker etc Length: 41 inches (note the photo says that it is 65 cm but it is actually 104 cm long)