Features:
100% brand new and high quality.
Adapt your USB port with this cable so you can power small devices and electronics that use a 5.5mm barrel jack.
Length: 40" Cable uses the 5V DC from the USB port.
Specifications:
Power devices from a USB port
Provides 5V DC from USB Charging
For small electronics and devices which use a 5.5mm barrel jack for a power cable
5.5mm*2.1mm Male Power Plug 
Size of this USB Charging Cord:
Outside diameter: 5.5mm
Inside diameter: 2.5mm
Cable length: Approx. 40" long
Color: Black
Package Included:
1x USB2.0 To DC Cable(5.5mm x 2.1mm)