This problem can be easily solved by using this USB 3.0 y Cable
Our Sync USB 3.0 Power Adapter Y cable for your is the solution. Our cable allows for power to be taken from 2 USB ports, like a PC and External hard drive.
Allows you to link 1 USB device into 2 USB Ports on your PC for more power. There are times you may have an external device, such as a portable 2.5 hard drive, and a standard USB cable is not able to transfer enough power to operate the device.
Length: 30cm
Two USB male connector,One is for USB 3.0 power and data, another one for USB 2.0 power only.