This is the standard Odroid-XU4 and Odroid-XU4Q PSU. It's not compatible with the Odroid-C2.
You cannot use a USB to power an Odroid-XU4. Also, if you want to mount an external USB Hard Drive, you should use the 6A PSU.
- input voltage: AC 100~240
- output: DC 5V / 4A
- inner plug diameter: 2.1 mm
- outer plug diameter: 5.5 mm