Quote:
Originally Posted by Mr Kleen
The battery backpack has a secondary USB input that can be used to provide power to the GoPro while the mic adapter takes up the USB port on the camera itself.
(I know we covered this elsewhere, just wanted to be sure the answer was on the forums too ;-)
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Yup Gabe, I ended up buying one of these Switronix USB external battery cable for $28. This way I can still use my external mic.
Switronix DVGP3USB GoPro 3/3+ Battery Eliminator USB with 10-Feet Power Cable
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1