You are in the middle of working on your latest robot, when you need to program a new board you just got in. You dig through your bin of USB cables only to find that you have hundreds that have the wrong end, and exactly zero that have the end you're looking for. As luck would have it, you remember that you ordered the Sparkfun Cerberus USB Cable! With this cable, you will always have the right connection.
The Cerberus USB Cable has the standard A-type connector, which you can plug into your computer or USB power supply; At the other end are three common USB connectors: B, mini-B and micro-B. Want to transfer data and power three devices at the same time? This cable comes standard with a USB hub built in, so you'll never have to worry about deciding between charging your phone and moving your extensive collection of sci-fi movies to an external hard drive.