USB Y Split for power
I've just got a simple question, which I was surprised to not find anywhere. A long time ago, I had a portable drive which had a single usb cable to two ends. One end had data + power, and the other end had just power. This was to supply more than 5v to the drive. I want to recreate this, do I need to do anything except splice another cable (with just the power + ground) into the one I have? Do I need to put anything in between them?