This cable has a male USB A plug on one end and a DC 2.5 mm x 0.8 mm barrel plug, center positive on the other end. The length of the cable is about 1.2 meter.

This cable is handy if you want to power a device with barrel jack from a USB wall adapter or power-pack. A USB port typically delivers between 4.75V to 5.25V DC power.

We use this cable to power an Odroid-C2/C1+ board through the DC jack from a USB power supply.