Can I charge a mobile device or supply power to a portable hard drive via the DJM-V5?

The mobile device connection terminal (USB port) in the MULTI I/O section on the DJM-V5 can supply 5V/3A power. 
You can supply power to your portable hard drive or charge your mobile device by plugging either device into the port.
Note: Check the power specifications of the device you want to connect before you use it.
Note: Depending on the specifications of the connecting cable or conversion connector, iOS devices equipped with a Lightning port may not be able to charge.