The QuNeo uses a micro-USB connector. This is different from a mini-USB connector, and much more robust, so make sure you get the correct cable if you're looking to purchase an extra cable or replacement. The cable must be at least USB 2.0 to work properly.

You can purchase extra QuNeo cables from many retailers, including:

Amazon: http://www.amazon.com/Cable-Type-Male-Micro-Feet/dp/B001QE03GK

Walmart: http://www.walmart.com/ip/V7-6-Micro-USB-A-to-Micro-USB-B-Male-to-Male-USB-2.0-Cable/16419441