Thank you for contacting us. The methods to power the Edison module vary depending on the breakout board you're using it with. The power methods for each of the boards are explained in each hardware guide, so I'd recommend you to take a look at the following documents choose the method based on the specifications.
Mini Breakout Board (Section 2.1) http://www.intel.com/content/www/us/en/support/boards-and-kits/000005574.html
Arduino breakout Board (Section 4) http://www.intel.com/content/www/us/en/support/boards-and-kits/000005583.html .
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